/**
 * @preserve
 * jquery.layout 1.4.4
 * $Date: 2014-11-29 08:00:00 (Sat, 29 November 2014) $
 * $Rev: 1.0404 $
 *
 * Copyright (c) 2014 Kevin Dalman (http://jquery-dev.com)
 * Based on work by Fabrizio Balliano (http://www.fabrizioballiano.net)
 *
 * Dual licensed under the GPL (http://www.gnu.org/licenses/gpl.html)
 * and MIT (http://www.opensource.org/licenses/mit-license.php) licenses.
 *
 * SEE: http://layout.jquery-dev.com/LICENSE.txt
 *
 * Changelog: http://layout.jquery-dev.com/changelog.cfm
 *
 * Docs: http://layout.jquery-dev.com/documentation.html
 * Tips: http://layout.jquery-dev.com/tips.html
 * Help: http://groups.google.com/group/jquery-ui-layout
 */

/* JavaDoc Info: http://code.google.com/closure/compiler/docs/js-for-compiler.html
 * {!Object}  non-nullable type (never NULL)
 * {?string}  nullable type (sometimes NULL) - default for {Object}
 * {number=}  optional parameter
 * {*}      ALL types
 */
/*  TODO for jQ 2.x 
 *  check $.fn.disableSelection - this is in jQuery UI 1.9.x
 */

// NOTE: For best readability, view with a fixed-width font and tabs equal to 4-chars

;(function ($) {

// alias Math methods - used a lot!
var min   = Math.min
, max   = Math.max
, round = Math.floor

, isStr =  function (v) { return $.type(v) === "string"; }

  /**
   * @param {!Object}     Instance
   * @param {Array.<string>}  a_fn
   */
, runPluginCallbacks = function (Instance, a_fn) {
    if ($.isArray(a_fn))
      for (var i=0, c=a_fn.length; i<c; i++) {
        var fn = a_fn[i];
        try {
          if (isStr(fn)) // 'name' of a function
            fn = eval(fn);
          if ($.isFunction(fn))
            g(fn)( Instance );
        } catch (ex) {}
      }
    function g (f) { return f; }; // compiler hack
  }
;

/*
 *  GENERIC $.layout METHODS - used by all layouts
 */
$.layout = {

  version:  "1.4.4"
, revision: 1.0404 // eg: ver 1.4.4 = rev 1.0404 - major(n+).minor(nn)+patch(nn+)

  // $.layout.browser REPLACES $.browser
, browser:  {} // set below

  // *PREDEFINED* EFFECTS & DEFAULTS 
  // MUST list effect here - OR MUST set an fxSettings option (can be an empty hash: {})
, effects: {

  //  Pane Open/Close Animations
    slide: {
      all:  { duration:  "fast" } // eg: duration: 1000, easing: "easeOutBounce"
    , north:  { direction: "up" }
    , south:  { direction: "down" }
    , east: { direction: "right"}
    , west: { direction: "left" }
    }
  , drop: {
      all:  { duration:  "slow" }
    , north:  { direction: "up" }
    , south:  { direction: "down" }
    , east: { direction: "right"}
    , west: { direction: "left" }
    }
  , scale: {
      all:  { duration: "fast"  }
    }
  //  these are not recommended, but can be used
  , blind:    {}
  , clip:   {}
  , explode:  {}
  , fade:   {}
  , fold:   {}
  , puff:   {}

  //  Pane Resize Animations
  , size: {
      all:  { easing: "swing" }
    }
  }

  // INTERNAL CONFIG DATA - DO NOT CHANGE THIS!
, config: {
    optionRootKeys: "effects,panes,north,south,west,east,center".split(",")
  , allPanes:   "north,south,west,east,center".split(",")
  , borderPanes:  "north,south,west,east".split(",")
  , oppositeEdge: {
      north:  "south"
    , south:  "north"
    , east:   "west"
    , west:   "east"
    }
  //  offscreen data
  , offscreenCSS: { left: "-99999px", right: "auto" } // used by hide/close if useOffscreenClose=true
  , offscreenReset: "offscreenReset" // key used for data
  //  CSS used in multiple places
  , hidden:   { visibility: "hidden" }
  , visible:  { visibility: "visible" }
  //  layout element settings
  , resizers: {
      cssReq: {
        position:   "absolute"
      , padding:  0
      , margin:   0
      , fontSize: "1px"
      , textAlign:  "left"  // to counter-act "center" alignment!
      , overflow:   "hidden" // prevent toggler-button from overflowing
      //  SEE $.layout.defaults.zIndexes.resizer_normal
      }
    , cssDemo: { // DEMO CSS - applied if: options.PANE.applyDemoStyles=true
        background: "#DDD"
      , border:   "none"
      }
    }
  , togglers: {
      cssReq: {
        position:   "absolute"
      , display:  "block"
      , padding:  0
      , margin:   0
      , overflow: "hidden"
      , textAlign:  "center"
      , fontSize: "1px"
      , cursor:   "pointer"
      , zIndex:   1
      }
    , cssDemo: { // DEMO CSS - applied if: options.PANE.applyDemoStyles=true
        background: "#AAA"
      }
    }
  , content: {
      cssReq: {
        position: "relative" /* contain floated or positioned elements */
      }
    , cssDemo: { // DEMO CSS - applied if: options.PANE.applyDemoStyles=true
        overflow: "auto"
      , padding:  "10px"
      }
    , cssDemoPane: { // DEMO CSS - REMOVE scrolling from 'pane' when it has a content-div
        overflow: "hidden"
      , padding:  0
      }
    }
  , panes: { // defaults for ALL panes - overridden by 'per-pane settings' below
      cssReq: {
        position:   "absolute"
      , margin:   0
      //  $.layout.defaults.zIndexes.pane_normal
      }
    , cssDemo: { // DEMO CSS - applied if: options.PANE.applyDemoStyles=true
        padding:  "10px"
      , background: "#FFF"
      , border:   "1px solid #BBB"
      , overflow: "auto"
      }
    }
  , north: {
      side:     "top"
    , sizeType:   "Height"
    , dir:      "horz"
    , cssReq: {
        top:    0
      , bottom:   "auto"
      , left:     0
      , right:    0
      , width:    "auto"
      //  height:   DYNAMIC
      }
    }
  , south: {
      side:     "bottom"
    , sizeType:   "Height"
    , dir:      "horz"
    , cssReq: {
        top:    "auto"
      , bottom:   0
      , left:     0
      , right:    0
      , width:    "auto"
      //  height:   DYNAMIC
      }
    }
  , east: {
      side:     "right"
    , sizeType:   "Width"
    , dir:      "vert"
    , cssReq: {
        left:     "auto"
      , right:    0
      , top:    "auto" // DYNAMIC
      , bottom:   "auto" // DYNAMIC
      , height:   "auto"
      //  width:    DYNAMIC
      }
    }
  , west: {
      side:     "left"
    , sizeType:   "Width"
    , dir:      "vert"
    , cssReq: {
        left:     0
      , right:    "auto"
      , top:    "auto" // DYNAMIC
      , bottom:   "auto" // DYNAMIC
      , height:   "auto"
      //  width:    DYNAMIC
      }
    }
  , center: {
      dir:      "center"
    , cssReq: {
        left:     "auto" // DYNAMIC
      , right:    "auto" // DYNAMIC
      , top:    "auto" // DYNAMIC
      , bottom:   "auto" // DYNAMIC
      , height:   "auto"
      , width:    "auto"
      }
    }
  }

  // CALLBACK FUNCTION NAMESPACE - used to store reusable callback functions
, callbacks: {}

, getParentPaneElem: function (el) {
    // must pass either a container or pane element
    var $el = $(el)
    , layout = $el.data("layout") || $el.data("parentLayout");
    if (layout) {
      var $cont = layout.container;
      // see if this container is directly-nested inside an outer-pane
      if ($cont.data("layoutPane")) return $cont;
      var $pane = $cont.closest("."+ $.layout.defaults.panes.paneClass);
      // if a pane was found, return it
      if ($pane.data("layoutPane")) return $pane;
    }
    return null;
  }

, getParentPaneInstance: function (el) {
    // must pass either a container or pane element
    var $pane = $.layout.getParentPaneElem(el);
    return $pane ? $pane.data("layoutPane") : null;
  }

, getParentLayoutInstance: function (el) {
    // must pass either a container or pane element
    var $pane = $.layout.getParentPaneElem(el);
    return $pane ? $pane.data("parentLayout") : null;
  }

, getEventObject: function (evt) {
    return typeof evt === "object" && evt.stopPropagation ? evt : null;
  }
, parsePaneName: function (evt_or_pane) {
    var evt = $.layout.getEventObject( evt_or_pane )
    , pane = evt_or_pane;
    if (evt) {
      // ALWAYS stop propagation of events triggered in Layout!
      evt.stopPropagation();
      pane = $(this).data("layoutEdge");
    }
    if (pane && !/^(west|east|north|south|center)$/.test(pane)) {
      $.layout.msg('LAYOUT ERROR - Invalid pane-name: "'+ pane +'"');
      pane = "error";
    }
    return pane;
  }


  // LAYOUT-PLUGIN REGISTRATION
  // more plugins can added beyond this default list
, plugins: {
    draggable:    !!$.fn.draggable // resizing
  , effects: {
      core:   !!$.effects   // animimations (specific effects tested by initOptions)
    , slide:    $.effects && ($.effects.slide || ($.effects.effect && $.effects.effect.slide)) // default effect
    }
  }

//  arrays of plugin or other methods to be triggered for events in *each layout* - will be passed 'Instance'
, onCreate: []  // runs when layout is just starting to be created - right after options are set
, onLoad:   []  // runs after layout container and global events init, but before initPanes is called
, onReady:  []  // runs after initialization *completes* - ie, after initPanes completes successfully
, onDestroy:  []  // runs after layout is destroyed
, onUnload: []  // runs after layout is destroyed OR when page unloads
, afterOpen:  []  // runs after setAsOpen() completes
, afterClose: []  // runs after setAsClosed() completes

  /*
   *  GENERIC UTILITY METHODS
   */

  // calculate and return the scrollbar width, as an integer
, scrollbarWidth:   function () { return window.scrollbarWidth  || $.layout.getScrollbarSize('width'); }
, scrollbarHeight:  function () { return window.scrollbarHeight || $.layout.getScrollbarSize('height'); }
, getScrollbarSize: function (dim) {
    var $c  = $('<div style="position: absolute; top: -10000px; left: -10000px; width: 100px; height: 100px; border: 0; overflow: scroll;"></div>').appendTo("body")
    , d = { width: $c.outerWidth - $c[0].clientWidth, height: 100 - $c[0].clientHeight };
    $c.remove();
    window.scrollbarWidth = d.width;
    window.scrollbarHeight  = d.height;
    return dim.match(/^(width|height)$/) ? d[dim] : d;
  }


, disableTextSelection: function () {
    var $d  = $(document)
    , s = 'textSelectionDisabled'
    , x = 'textSelectionInitialized'
    ;
    if ($.fn.disableSelection) {
      if (!$d.data(x)) // document hasn't been initialized yet
        $d.on('mouseup', $.layout.enableTextSelection ).data(x, true);
      if (!$d.data(s))
        $d.disableSelection().data(s, true);
    }
  }
, enableTextSelection: function () {
    var $d  = $(document)
    , s = 'textSelectionDisabled';
    if ($.fn.enableSelection && $d.data(s))
      $d.enableSelection().data(s, false);
  }


  /**
   * Returns hash container 'display' and 'visibility'
   *
   * @see $.swap() - swaps CSS, runs callback, resets CSS
   * @param  {!Object}    $E        jQuery element
   * @param  {boolean=} [force=false] Run even if display != none
   * @return {!Object}            Returns current style props, if applicable
   */
, showInvisibly: function ($E, force) {
    if ($E && $E.length && (force || $E.css("display") === "none")) { // only if not *already hidden*
      var s = $E[0].style
        // save ONLY the 'style' props because that is what we must restore
      , CSS = { display: s.display || '', visibility: s.visibility || '' };
      // show element 'invisibly' so can be measured
      $E.css({ display: "block", visibility: "hidden" });
      return CSS;
    }
    return {};
  }

  /**
   * Returns data for setting size of an element (container or a pane).
   *
   * @see  _create(), onWindowResize() for container, plus others for pane
   * @return JSON  Returns a hash of all dimensions: top, bottom, left, right, outerWidth, innerHeight, etc
   */
, getElementDimensions: function ($E, inset) {
    var
    //  dimensions hash - start with current data IF passed
      d = { css: {}, inset: {} }
    , x = d.css     // CSS hash
    , i = { bottom: 0 } // TEMP insets (bottom = complier hack)
    , N = $.layout.cssNum
    , R = Math.round
    , off = $E.offset()
    , b, p, ei      // TEMP border, padding
    ;
    d.offsetLeft = off.left;
    d.offsetTop  = off.top;

    if (!inset) inset = {}; // simplify logic below

    $.each("Left,Right,Top,Bottom".split(","), function (idx, e) { // e = edge
      b = x["border" + e] = $.layout.borderWidth($E, e);
      p = x["padding"+ e] = $.layout.cssNum($E, "padding"+e);
      ei = e.toLowerCase();
      d.inset[ei] = inset[ei] >= 0 ? inset[ei] : p; // any missing insetX value = paddingX
      i[ei] = d.inset[ei] + b; // total offset of content from outer side
    });

    x.width   = R($E.width());
    x.height  = R($E.height());
    x.top   = N($E,"top",true);
    x.bottom  = N($E,"bottom",true);
    x.left    = N($E,"left",true);
    x.right   = N($E,"right",true);

    d.outerWidth  = R($E.outerWidth());
    d.outerHeight = R($E.outerHeight());
    // calc the TRUE inner-dimensions, even in quirks-mode!
    d.innerWidth  = max(0, d.outerWidth  - i.left - i.right);
    d.innerHeight = max(0, d.outerHeight - i.top  - i.bottom);
    // layoutWidth/Height is used in calcs for manual resizing
    // layoutW/H only differs from innerW/H when in quirks-mode - then is like outerW/H
    d.layoutWidth = R($E.innerWidth());
    d.layoutHeight  = R($E.innerHeight());

    //if ($E.prop('tagName') === 'BODY') { debugData( d, $E.prop('tagName') ); } // DEBUG

    //d.visible = $E.is(":visible");// && x.width > 0 && x.height > 0;

    return d;
  }

, getElementStyles: function ($E, list) {
    var
      CSS = {}
    , style = $E[0].style
    , props = list.split(",")
    , sides = "Top,Bottom,Left,Right".split(",")
    , attrs = "Color,Style,Width".split(",")
    , p, s, a, i, j, k
    ;
    for (i=0; i < props.length; i++) {
      p = props[i];
      if (p.match(/(border|padding|margin)$/))
        for (j=0; j < 4; j++) {
          s = sides[j];
          if (p === "border")
            for (k=0; k < 3; k++) {
              a = attrs[k];
              CSS[p+s+a] = style[p+s+a];
            }
          else
            CSS[p+s] = style[p+s];
        }
      else
        CSS[p] = style[p];
    };
    return CSS
  }

  /**
   * Return the innerWidth for the current browser/doctype
   *
   * @see  initPanes(), sizeMidPanes(), initHandles(), sizeHandles()
   * @param  {Array.<Object>} $E  Must pass a jQuery object - first element is processed
   * @param  {number=}      outerWidth (optional) Can pass a width, allowing calculations BEFORE element is resized
   * @return {number}     Returns the innerWidth of the elem by subtracting padding and borders
   */
, cssWidth: function ($E, outerWidth) {
    // a 'calculated' outerHeight can be passed so borders and/or padding are removed if needed
    if (outerWidth <= 0) return 0;

    var lb  = $.layout.browser
    , bs  = !lb.boxModel ? "border-box" : lb.boxSizing ? $E.css("boxSizing") : "content-box"
    , b = $.layout.borderWidth
    , n = $.layout.cssNum
    , W = outerWidth
    ;
    // strip border and/or padding from outerWidth to get CSS Width
    if (bs !== "border-box")
      W -= (b($E, "Left") + b($E, "Right"));
    if (bs === "content-box")
      W -= (n($E, "paddingLeft") + n($E, "paddingRight"));
    return max(0,W);
  }

  /**
   * Return the innerHeight for the current browser/doctype
   *
   * @see  initPanes(), sizeMidPanes(), initHandles(), sizeHandles()
   * @param  {Array.<Object>} $E  Must pass a jQuery object - first element is processed
   * @param  {number=}      outerHeight  (optional) Can pass a width, allowing calculations BEFORE element is resized
   * @return {number}     Returns the innerHeight of the elem by subtracting padding and borders
   */
, cssHeight: function ($E, outerHeight) {
    // a 'calculated' outerHeight can be passed so borders and/or padding are removed if needed
    if (outerHeight <= 0) return 0;

    var lb  = $.layout.browser
    , bs  = !lb.boxModel ? "border-box" : lb.boxSizing ? $E.css("boxSizing") : "content-box"
    , b = $.layout.borderWidth
    , n = $.layout.cssNum
    , H = outerHeight
    ;
    // strip border and/or padding from outerHeight to get CSS Height
    if (bs !== "border-box")
      H -= (b($E, "Top") + b($E, "Bottom"));
    if (bs === "content-box")
      H -= (n($E, "paddingTop") + n($E, "paddingBottom"));
    return max(0,H);
  }

  /**
   * Returns the 'current CSS numeric value' for a CSS property - 0 if property does not exist
   *
   * @see  Called by many methods
   * @param {Array.<Object>}  $E          Must pass a jQuery object - first element is processed
   * @param {string}      prop        The name of the CSS property, eg: top, width, etc.
   * @param {boolean=}      [allowAuto=false] true = return 'auto' if that is value; false = return 0
   * @return {(string|number)}            Usually used to get an integer value for position (top, left) or size (height, width)
   */
, cssNum: function ($E, prop, allowAuto) {
    if (!$E.jquery) $E = $($E);
    var CSS = $.layout.showInvisibly($E)
    , p = $.css($E[0], prop, true)
    , v = allowAuto && p=="auto" ? p : Math.round(parseFloat(p) || 0);
    $E.css( CSS ); // RESET
    return v;
  }

, borderWidth: function (el, side) {
    if (el.jquery) el = el[0];
    var b = "border"+ side.substr(0,1).toUpperCase() + side.substr(1); // left => Left
    return $.css(el, b+"Style", true) === "none" ? 0 : Math.round(parseFloat($.css(el, b+"Width", true)) || 0);
  }

  /**
   * Mouse-tracking utility - FUTURE REFERENCE
   *
   * init: if (!window.mouse) {
   *      window.mouse = { x: 0, y: 0 };
   *      $(document).mousemove( $.layout.trackMouse );
   *    }
   *
   * @param {Object}    evt
   *
, trackMouse: function (evt) {
    window.mouse = { x: evt.clientX, y: evt.clientY };
  }
  */

  /**
   * SUBROUTINE for preventPrematureSlideClose option
   *
   * @param {Object}    evt
   * @param {Object=}   el
   */
, isMouseOverElem: function (evt, el) {
    var
      $E  = $(el || this)
    , d = $E.offset()
    , T = d.top
    , L = d.left
    , R = L + $E.outerWidth()
    , B = T + $E.outerHeight()
    , x = evt.pageX // evt.clientX ?
    , y = evt.pageY // evt.clientY ?
    ;
    // if X & Y are < 0, probably means is over an open SELECT
    return ($.layout.browser.msie && x < 0 && y < 0) || ((x >= L && x <= R) && (y >= T && y <= B));
  }

  /**
   * Message/Logging Utility
   *
   * @example $.layout.msg("My message");       // log text
   * @example $.layout.msg("My message", true);   // alert text
   * @example $.layout.msg({ foo: "bar" }, "Title");  // log hash-data, with custom title
   * @example $.layout.msg({ foo: "bar" }, true, "Title", { sort: false }); -OR-
   * @example $.layout.msg({ foo: "bar" }, "Title", { sort: false, display: true }); // alert hash-data
   *
   * @param {(Object|string)}     info      String message OR Hash/Array
   * @param {(Boolean|string|Object)=}  [popup=false] True means alert-box - can be skipped
   * @param {(Object|string)=}      [debugTitle=""] Title for Hash data - can be skipped
   * @param {Object=}         [debugOpts]   Extra options for debug output
   */
, msg: function (info, popup, debugTitle, debugOpts) {
    if ($.isPlainObject(info) && window.debugData) {
      if (typeof popup === "string") {
        debugOpts = debugTitle;
        debugTitle  = popup;
      }
      else if (typeof debugTitle === "object") {
        debugOpts = debugTitle;
        debugTitle  = null;
      }
      var t = debugTitle || "log( <object> )"
      , o = $.extend({ sort: false, returnHTML: false, display: false }, debugOpts);
      if (popup === true || o.display)
        debugData( info, t, o );
      else if (window.console)
        console.log(debugData( info, t, o ));
    }
    else if (popup)
      alert(info);
    else if (window.console)
      console.log(info);
    else {
      var id  = "#layoutLogger"
      , $l = $(id);
      if (!$l.length)
        $l = createLog();
      $l.children("ul").append('<li style="padding: 4px 10px; margin: 0; border-top: 1px solid #CCC;">'+ info.replace(/\</g,"&lt;").replace(/\>/g,"&gt;") +'</li>');
    }

    function createLog () {
      var pos = $.support.fixedPosition ? 'fixed' : 'absolute'
      , $e = $('<div id="layoutLogger" style="position: '+ pos +'; top: 5px; z-index: 999999; max-width: 25%; overflow: hidden; border: 1px solid #000; border-radius: 5px; background: #FBFBFB; box-shadow: 0 2px 10px rgba(0,0,0,0.3);">'
        + '<div style="font-size: 13px; font-weight: bold; padding: 5px 10px; background: #F6F6F6; border-radius: 5px 5px 0 0; cursor: move;">'
        + '<span style="float: right; padding-left: 7px; cursor: pointer;" title="Remove Console" onclick="$(this).closest(\'#layoutLogger\').remove()">X</span>Layout console.log</div>'
        + '<ul style="font-size: 13px; font-weight: none; list-style: none; margin: 0; padding: 0 0 2px;"></ul>'
        + '</div>'
        ).appendTo("body");
      $e.css('left', $(window).width() - $e.outerWidth() - 5)
      if ($.ui.draggable) $e.draggable({ handle: ':first-child' });
      return $e;
    };
  }

};


/*
 *  $.layout.browser REPLACES removed $.browser, with extra data
 *  Parsing code here adapted from jQuery 1.8 $.browse
 */
(function(){
  var u = navigator.userAgent.toLowerCase()
  , m = /(chrome)[ \/]([\w.]+)/.exec( u )
    ||  /(webkit)[ \/]([\w.]+)/.exec( u )
    ||  /(opera)(?:.*version|)[ \/]([\w.]+)/.exec( u )
    ||  /(msie) ([\w.]+)/.exec( u )
    ||  u.indexOf("compatible") < 0 && /(mozilla)(?:.*? rv:([\w.]+)|)/.exec( u )
    ||  []
  , b = m[1] || ""
  , v = m[2] || 0
  , ie = b === "msie"
  , cm = document.compatMode
  , $s = $.support
  , bs = $s.boxSizing !== undefined ? $s.boxSizing : $s.boxSizingReliable
  , bm = !ie || !cm || cm === "CSS1Compat" || $s.boxModel || false
  , lb = $.layout.browser = {
      version:  v
    , safari:   b === "webkit"  // webkit (NOT chrome) = safari
    , webkit:   b === "chrome"  // chrome = webkit
    , msie:   ie
    , isIE6:    ie && v == 6
      // ONLY IE reverts to old box-model - Note that compatMode was deprecated as of IE8
    , boxModel: bm
    , boxSizing:  !!(typeof bs === "function" ? bs() : bs)
    };
  ;
  if (b) lb[b] = true; // set CURRENT browser
  /*  OLD versions of jQuery only set $.support.boxModel after page is loaded
   *  so if this is IE, use support.boxModel to test for quirks-mode (ONLY IE changes boxModel) */
  if (!bm && !cm) $(function(){ lb.boxModel = $s.boxModel; });
})();


// DEFAULT OPTIONS
$.layout.defaults = {
/*
 *  LAYOUT & LAYOUT-CONTAINER OPTIONS
 *  - none of these options are applicable to individual panes
 */
  name:           ""      // Not required, but useful for buttons and used for the state-cookie
, containerClass:       "ui-layout-container" // layout-container element
, inset:            null    // custom container-inset values (override padding)
, scrollToBookmarkOnLoad:   true    // after creating a layout, scroll to bookmark in URL (.../page.htm#myBookmark)
, resizeWithWindow:     true    // bind thisLayout.resizeAll() to the window.resize event
, resizeWithWindowDelay:    200     // delay calling resizeAll because makes window resizing very jerky
, resizeWithWindowMaxDelay: 0     // 0 = none - force resize every XX ms while window is being resized
, maskPanesEarly:       false   // true = create pane-masks on resizer.mouseDown instead of waiting for resizer.dragstart
, onresizeall_start:      null    // CALLBACK when resizeAll() STARTS - NOT pane-specific
, onresizeall_end:      null    // CALLBACK when resizeAll() ENDS - NOT pane-specific
, onload_start:       null    // CALLBACK when Layout inits - after options initialized, but before elements
, onload_end:         null    // CALLBACK when Layout inits - after EVERYTHING has been initialized
, onunload_start:       null    // CALLBACK when Layout is destroyed OR onWindowUnload
, onunload_end:       null    // CALLBACK when Layout is destroyed OR onWindowUnload
, initPanes:          true    // false = DO NOT initialize the panes onLoad - will init later
, showErrorMessages:      true    // enables fatal error messages to warn developers of common errors
, showDebugMessages:      false   // display console-and-alert debug msgs - IF this Layout version _has_ debugging code!
//  Changing this zIndex value will cause other zIndex values to automatically change
, zIndex:           null    // the PANE zIndex - resizers and masks will be +1
//  DO NOT CHANGE the zIndex values below unless you clearly understand their relationships
, zIndexes: {               // set _default_ z-index values here...
    pane_normal:      0     // normal z-index for panes
  , content_mask:     1     // applied to overlays used to mask content INSIDE panes during resizing
  , resizer_normal:     2     // normal z-index for resizer-bars
  , pane_sliding:     100     // applied to *BOTH* the pane and its resizer when a pane is 'slid open'
  , pane_animate:     1000    // applied to the pane when being animated - not applied to the resizer
  , resizer_drag:     10000   // applied to the CLONED resizer-bar when being 'dragged'
  }
, errors: {
    pane:         "pane"    // description of "layout pane element" - used only in error messages
  , selector:       "selector"  // description of "jQuery-selector" - used only in error messages
  , addButtonError:     "Error Adding Button\nInvalid "
  , containerMissing:   "UI Layout Initialization Error\nThe specified layout-container does not exist."
  , centerPaneMissing:    "UI Layout Initialization Error\nThe center-pane element does not exist.\nThe center-pane is a required element."
  , noContainerHeight:    "UI Layout Initialization Warning\nThe layout-container \"CONTAINER\" has no height.\nTherefore the layout is 0-height and hence 'invisible'!"
  , callbackError:      "UI Layout Callback Error\nThe EVENT callback is not a valid function."
  }
/*
 *  PANE DEFAULT SETTINGS
 *  - settings under the 'panes' key become the default settings for *all panes*
 *  - ALL pane-options can also be set specifically for each panes, which will override these 'default values'
 */
, panes: { // default options for 'all panes' - will be overridden by 'per-pane settings'
    applyDemoStyles:    false   // NOTE: renamed from applyDefaultStyles for clarity
  , closable:       true    // pane can open & close
  , resizable:        true    // when open, pane can be resized 
  , slidable:       true    // when closed, pane can 'slide open' over other panes - closes on mouse-out
  , initClosed:       false   // true = init pane as 'closed'
  , initHidden:       false     // true = init pane as 'hidden' - no resizer-bar/spacing
  //  SELECTORS
  //, paneSelector:     ""      // MUST be pane-specific - jQuery selector for pane
  , contentSelector:    ".ui-layout-content" // INNER div/element to auto-size so only it scrolls, not the entire pane!
  , contentIgnoreSelector:  ".ui-layout-ignore" // element(s) to 'ignore' when measuring 'content'
  , findNestedContent:    false   // true = $P.find(contentSelector), false = $P.children(contentSelector)
  //  GENERIC ROOT-CLASSES - for auto-generated classNames
  , paneClass:        "ui-layout-pane"  // Layout Pane
  , resizerClass:     "ui-layout-resizer" // Resizer Bar
  , togglerClass:     "ui-layout-toggler" // Toggler Button
  , buttonClass:      "ui-layout-button"  // CUSTOM Buttons - eg: '[ui-layout-button]-toggle/-open/-close/-pin'
  //  ELEMENT SIZE & SPACING
  //, size:         100     // MUST be pane-specific -initial size of pane
  , minSize:        0     // when manually resizing a pane
  , maxSize:        0     // ditto, 0 = no limit
  , spacing_open:     6     // space between pane and adjacent panes - when pane is 'open'
  , spacing_closed:     6     // ditto - when pane is 'closed'
  , togglerLength_open:   50      // Length = WIDTH of toggler button on north/south sides - HEIGHT on east/west sides
  , togglerLength_closed:   50      // 100% OR -1 means 'full height/width of resizer bar' - 0 means 'hidden'
  , togglerAlign_open:    "center"  // top/left, bottom/right, center, OR...
  , togglerAlign_closed:  "center"  // 1 => nn = offset from top/left, -1 => -nn == offset from bottom/right
  , togglerContent_open:  ""      // text or HTML to put INSIDE the toggler
  , togglerContent_closed:  ""      // ditto
  //  RESIZING OPTIONS
  , resizerDblClickToggle:  true    // 
  , autoResize:       true    // IF size is 'auto' or a percentage, then recalc 'pixel size' whenever the layout resizes
  , autoReopen:       true    // IF a pane was auto-closed due to noRoom, reopen it when there is room? False = leave it closed
  , resizerDragOpacity:   1     // option for ui.draggable
  //, resizerCursor:      ""      // MUST be pane-specific - cursor when over resizer-bar
  , maskContents:     false   // true = add DIV-mask over-or-inside this pane so can 'drag' over IFRAMES
  , maskObjects:      false   // true = add IFRAME-mask over-or-inside this pane to cover objects/applets - content-mask will overlay this mask
  , maskZindex:       null    // will override zIndexes.content_mask if specified - not applicable to iframe-panes
  , resizingGrid:     false   // grid size that the resizers will snap-to during resizing, eg: [20,20]
  , livePaneResizing:   false   // true = LIVE Resizing as resizer is dragged
  , liveContentResizing:  false   // true = re-measure header/footer heights as resizer is dragged
  , liveResizingTolerance:  1     // how many px change before pane resizes, to control performance
  //  SLIDING OPTIONS
  , sliderCursor:     "pointer" // cursor when resizer-bar will trigger 'sliding'
  , slideTrigger_open:    "click"   // click, dblclick, mouseenter
  , slideTrigger_close:   "mouseleave"// click, mouseleave
  , slideDelay_open:    300     // applies only for mouseenter event - 0 = instant open
  , slideDelay_close:   300     // applies only for mouseleave event (300ms is the minimum!)
  , hideTogglerOnSlide:   false   // when pane is slid-open, should the toggler show?
  , preventQuickSlideClose: $.layout.browser.webkit // Chrome triggers slideClosed as it is opening
  , preventPrematureSlideClose: false // handle incorrect mouseleave trigger, like when over a SELECT-list in IE
  //  PANE-SPECIFIC TIPS & MESSAGES
  , tips: {
      Open:       "Open"    // eg: "Open Pane"
    , Close:        "Close"
    , Resize:       "Resize"
    , Slide:        "Slide Open"
    , Pin:        "Pin"
    , Unpin:        "Un-Pin"
    , noRoomToOpen:   "Not enough room to show this panel." // alert if user tries to open a pane that cannot
    , minSizeWarning:   "Panel has reached its minimum size"  // displays in browser statusbar
    , maxSizeWarning:   "Panel has reached its maximum size"  // ditto
    }
  //  HOT-KEYS & MISC
  , showOverflowOnHover:  false   // will bind allowOverflow() utility to pane.onMouseOver
  , enableCursorHotkey:   true    // enabled 'cursor' hotkeys
  //, customHotkey:     ""      // MUST be pane-specific - EITHER a charCode OR a character
  , customHotkeyModifier: "SHIFT"   // either 'SHIFT', 'CTRL' or 'CTRL+SHIFT' - NOT 'ALT'
  //  PANE ANIMATION
  //  NOTE: fxSss_open, fxSss_close & fxSss_size options (eg: fxName_open) are auto-generated if not passed
  , fxName:         "slide"   // ('none' or blank), slide, drop, scale -- only relevant to 'open' & 'close', NOT 'size'
  , fxSpeed:        null    // slow, normal, fast, 200, nnn - if passed, will OVERRIDE fxSettings.duration
  , fxSettings:       {}      // can be passed, eg: { easing: "easeOutBounce", duration: 1500 }
  , fxOpacityFix:     true    // tries to fix opacity in IE to restore anti-aliasing after animation
  , animatePaneSizing:    false   // true = animate resizing after dragging resizer-bar OR sizePane() is called
  /*  NOTE: Action-specific FX options are auto-generated from the options above if not specifically set:
    fxName_open:      "slide"   // 'Open' pane animation
    fnName_close:     "slide"   // 'Close' pane animation
    fxName_size:      "slide"   // 'Size' pane animation - when animatePaneSizing = true
    fxSpeed_open:     null
    fxSpeed_close:      null
    fxSpeed_size:     null
    fxSettings_open:    {}
    fxSettings_close:   {}
    fxSettings_size:    {}
  */
  //  CHILD/NESTED LAYOUTS
  , children:       null    // Layout-options for nested/child layout - even {} is valid as options
  , containerSelector:    ''      // if child is NOT 'directly nested', a selector to find it/them (can have more than one child layout!)
  , initChildren:     true    // true = child layout will be created as soon as _this_ layout completes initialization
  , destroyChildren:    true    // true = destroy child-layout if this pane is destroyed
  , resizeChildren:     true    // true = trigger child-layout.resizeAll() when this pane is resized
  //  EVENT TRIGGERING
  , triggerEventsOnLoad:  false   // true = trigger onopen OR onclose callbacks when layout initializes
  , triggerEventsDuringLiveResize: true // true = trigger onresize callback REPEATEDLY if livePaneResizing==true
  //  PANE CALLBACKS
  , onshow_start:     null    // CALLBACK when pane STARTS to Show  - BEFORE onopen/onhide_start
  , onshow_end:       null    // CALLBACK when pane ENDS being Shown  - AFTER  onopen/onhide_end
  , onhide_start:     null    // CALLBACK when pane STARTS to Close - BEFORE onclose_start
  , onhide_end:       null    // CALLBACK when pane ENDS being Closed - AFTER  onclose_end
  , onopen_start:     null    // CALLBACK when pane STARTS to Open
  , onopen_end:       null    // CALLBACK when pane ENDS being Opened
  , onclose_start:      null    // CALLBACK when pane STARTS to Close
  , onclose_end:      null    // CALLBACK when pane ENDS being Closed
  , onresize_start:     null    // CALLBACK when pane STARTS being Resized ***FOR ANY REASON***
  , onresize_end:     null    // CALLBACK when pane ENDS being Resized ***FOR ANY REASON***
  , onsizecontent_start:  null    // CALLBACK when sizing of content-element STARTS
  , onsizecontent_end:    null    // CALLBACK when sizing of content-element ENDS
  , onswap_start:     null    // CALLBACK when pane STARTS to Swap
  , onswap_end:       null    // CALLBACK when pane ENDS being Swapped
  , ondrag_start:     null    // CALLBACK when pane STARTS being ***MANUALLY*** Resized
  , ondrag_end:       null    // CALLBACK when pane ENDS being ***MANUALLY*** Resized
  }
/*
 *  PANE-SPECIFIC SETTINGS
 *  - options listed below MUST be specified per-pane - they CANNOT be set under 'panes'
 *  - all options under the 'panes' key can also be set specifically for any pane
 *  - most options under the 'panes' key apply only to 'border-panes' - NOT the the center-pane
 */
, north: {
    paneSelector:     ".ui-layout-north"
  , size:         "auto"    // eg: "auto", "30%", .30, 200
  , resizerCursor:      "n-resize"  // custom = url(myCursor.cur)
  , customHotkey:     ""      // EITHER a charCode (43) OR a character ("o")
  }
, south: {
    paneSelector:     ".ui-layout-south"
  , size:         "auto"
  , resizerCursor:      "s-resize"
  , customHotkey:     ""
  }
, east: {
    paneSelector:     ".ui-layout-east"
  , size:         200
  , resizerCursor:      "e-resize"
  , customHotkey:     ""
  }
, west: {
    paneSelector:     ".ui-layout-west"
  , size:         200
  , resizerCursor:      "w-resize"
  , customHotkey:     ""
  }
, center: {
    paneSelector:     ".ui-layout-center"
  , minWidth:       0
  , minHeight:        0
  }
};

$.layout.optionsMap = {
  // layout/global options - NOT pane-options
  layout: ("name,instanceKey,stateManagement,effects,inset,zIndexes,errors,"
  + "zIndex,scrollToBookmarkOnLoad,showErrorMessages,maskPanesEarly,"
  + "outset,resizeWithWindow,resizeWithWindowDelay,resizeWithWindowMaxDelay,"
  + "onresizeall,onresizeall_start,onresizeall_end,onload,onload_start,onload_end,onunload,onunload_start,onunload_end").split(",")
//  borderPanes: [ ALL options that are NOT specified as 'layout' ]
  // default.panes options that apply to the center-pane (most options apply _only_ to border-panes)
, center: ("paneClass,contentSelector,contentIgnoreSelector,findNestedContent,applyDemoStyles,triggerEventsOnLoad,"
  + "showOverflowOnHover,maskContents,maskObjects,liveContentResizing,"
  + "containerSelector,children,initChildren,resizeChildren,destroyChildren,"
  + "onresize,onresize_start,onresize_end,onsizecontent,onsizecontent_start,onsizecontent_end").split(",")
  // options that MUST be specifically set 'per-pane' - CANNOT set in the panes (defaults) key
, noDefault: ("paneSelector,resizerCursor,customHotkey").split(",")
};

/**
 * Processes options passed in converts flat-format data into subkey (JSON) format
 * In flat-format, subkeys are _currently_ separated with 2 underscores, like north__optName
 * Plugins may also call this method so they can transform their own data
 *
 * @param  {!Object}  hash      Data/options passed by user - may be a single level or nested levels
 * @param  {boolean=} [addKeys=false] Should the primary layout.options keys be added if they do not exist?
 * @return {Object}           Returns hash of minWidth & minHeight
 */
$.layout.transformData = function (hash, addKeys) {
  var json = addKeys ? { panes: {}, center: {} } : {} // init return object
  , branch, optKey, keys, key, val, i, c;

  if (typeof hash !== "object") return json; // no options passed

  // convert all 'flat-keys' to 'sub-key' format
  for (optKey in hash) {
    branch  = json;
    val   = hash[ optKey ];
    keys  = optKey.split("__"); // eg: west__size or north__fxSettings__duration
    c   = keys.length - 1;
    // convert underscore-delimited to subkeys
    for (i=0; i <= c; i++) {
      key = keys[i];
      if (i === c) {  // last key = value
        if ($.isPlainObject( val ))
          branch[key] = $.layout.transformData( val ); // RECURSE
        else
          branch[key] = val;
      }
      else {
        if (!branch[key])
          branch[key] = {}; // create the subkey
        // recurse to sub-key for next loop - if not done
        branch = branch[key];
      }
    }
  }
  return json;
};

// INTERNAL CONFIG DATA - DO NOT CHANGE THIS!
$.layout.backwardCompatibility = {
  // data used by renameOldOptions()
  map: {
  //  OLD Option Name:      NEW Option Name
    applyDefaultStyles:     "applyDemoStyles"
  //  CHILD/NESTED LAYOUTS
  , childOptions:       "children"
  , initChildLayout:      "initChildren"
  , destroyChildLayout:     "destroyChildren"
  , resizeChildLayout:      "resizeChildren"
  , resizeNestedLayout:     "resizeChildren"
  //  MISC Options
  , resizeWhileDragging:    "livePaneResizing"
  , resizeContentWhileDragging: "liveContentResizing"
  , triggerEventsWhileDragging: "triggerEventsDuringLiveResize"
  , maskIframesOnResize:    "maskContents"
  //  STATE MANAGEMENT
  , useStateCookie:       "stateManagement.enabled"
  , "cookie.autoLoad":      "stateManagement.autoLoad"
  , "cookie.autoSave":      "stateManagement.autoSave"
  , "cookie.keys":        "stateManagement.stateKeys"
  , "cookie.name":        "stateManagement.cookie.name"
  , "cookie.domain":      "stateManagement.cookie.domain"
  , "cookie.path":        "stateManagement.cookie.path"
  , "cookie.expires":     "stateManagement.cookie.expires"
  , "cookie.secure":      "stateManagement.cookie.secure"
  //  OLD Language options
  , noRoomToOpenTip:      "tips.noRoomToOpen"
  , togglerTip_open:      "tips.Close"  // open   = Close
  , togglerTip_closed:      "tips.Open"   // closed = Open
  , resizerTip:         "tips.Resize"
  , sliderTip:          "tips.Slide"
  }

/**
* @param {Object} opts
*/
, renameOptions: function (opts) {
    var map = $.layout.backwardCompatibility.map
    , oldData, newData, value
    ;
    for (var itemPath in map) {
      oldData = getBranch( itemPath );
      value = oldData.branch[ oldData.key ];
      if (value !== undefined) {
        newData = getBranch( map[itemPath], true );
        newData.branch[ newData.key ] = value;
        delete oldData.branch[ oldData.key ];
      }
    }

    /**
     * @param {string}  path
     * @param {boolean=}  [create=false]  Create path if does not exist
     */
    function getBranch (path, create) {
      var a = path.split(".") // split keys into array
      , c = a.length - 1
      , D = { branch: opts, key: a[c] } // init branch at top & set key (last item)
      , i = 0, k, undef;
      for (; i<c; i++) { // skip the last key (data)
        k = a[i];
        if (D.branch[ k ] == undefined) { // child-key does not exist
          if (create) {
            D.branch = D.branch[ k ] = {}; // create child-branch
          }
          else // can't go any farther
            D.branch = {}; // branch is undefined
        }
        else
          D.branch = D.branch[ k ]; // get child-branch
      }
      return D;
    };
  }

/**
* @param {Object} opts
*/
, renameAllOptions: function (opts) {
    var ren = $.layout.backwardCompatibility.renameOptions;
    // rename root (layout) options
    ren( opts );
    // rename 'defaults' to 'panes'
    if (opts.defaults) {
      if (typeof opts.panes !== "object")
        opts.panes = {};
      $.extend(true, opts.panes, opts.defaults);
      delete opts.defaults;
    }
    // rename options in the the options.panes key
    if (opts.panes) ren( opts.panes );
    // rename options inside *each pane key*, eg: options.west
    $.each($.layout.config.allPanes, function (i, pane) {
      if (opts[pane]) ren( opts[pane] );
    }); 
    return opts;
  }
};




/*  ============================================================
 *  BEGIN WIDGET: $( selector ).layout( {options} );
 *  ============================================================
 */
$.fn.layout = function (opts) {
  var

  // local aliases to global data
  browser = $.layout.browser
, _c    = $.layout.config

  // local aliases to utlity methods
, cssW  = $.layout.cssWidth
, cssH  = $.layout.cssHeight
, elDims  = $.layout.getElementDimensions
, styles  = $.layout.getElementStyles
, evtObj  = $.layout.getEventObject
, evtPane = $.layout.parsePaneName

/**
 * options - populated by initOptions()
 */
, options = $.extend(true, {}, $.layout.defaults)
, effects = options.effects = $.extend(true, {}, $.layout.effects)

/**
 * layout-state object
 */
, state = {
    // generate unique ID to use for event.namespace so can unbind only events added by 'this layout'
    id:       "layout"+ $.now() // code uses alias: sID
  , initialized:  false
  , paneResizing: false
  , panesSliding: {}
  , container:  {   // list all keys referenced in code to avoid compiler error msgs
      innerWidth:   0
    , innerHeight:  0
    , outerWidth:   0
    , outerHeight:  0
    , layoutWidth:  0
    , layoutHeight: 0
    }
  , north:    { childIdx: 0 }
  , south:    { childIdx: 0 }
  , east:   { childIdx: 0 }
  , west:   { childIdx: 0 }
  , center:   { childIdx: 0 }
  }

/**
 * parent/child-layout pointers
 */
//, hasParentLayout = false - exists ONLY inside Instance so can be set externally
, children = {
    north:    null
  , south:    null
  , east:   null
  , west:   null
  , center:   null
  }

/*
 * ###########################
 *  INTERNAL HELPER FUNCTIONS
 * ###########################
 */

  /**
   * Manages all internal timers
   */
, timer = {
    data: {}
  , set:  function (s, fn, ms) { timer.clear(s); timer.data[s] = setTimeout(fn, ms); }
  , clear:  function (s) { var t=timer.data; if (t[s]) {clearTimeout(t[s]); delete t[s];} }
  }

  /**
   * Alert or console.log a message - IF option is enabled.
   *
   * @param {(string|!Object)}  msg       Message (or debug-data) to display
   * @param {boolean=}      [popup=false] True by default, means 'alert', false means use console.log
   * @param {boolean=}      [debug=false] True means is a widget debugging message
   */
, _log = function (msg, popup, debug) {
    var o = options;
    if ((o.showErrorMessages && !debug) || (debug && o.showDebugMessages))
      $.layout.msg( o.name +' / '+ msg, (popup !== false) );
    return false;
  }

  /**
   * Executes a Callback function after a trigger event, like resize, open or close
   *
   * @param {string}        evtName         Name of the layout callback, eg "onresize_start"
   * @param {(string|boolean)=} [pane=""]       This is passed only so we can pass the 'pane object' to the callback
   * @param {(string|boolean)=} [skipBoundEvents=false] True = do not run events bound to the elements - only the callbacks set in options
   */
, _runCallbacks = function (evtName, pane, skipBoundEvents) {
    var hasPane = pane && isStr(pane)
    , s   = hasPane ? state[pane] : state
    , o   = hasPane ? options[pane] : options
    , lName = options.name
      // names like onopen and onopen_end separate are interchangeable in options...
    , lng   = evtName + (evtName.match(/_/) ? "" : "_end")
    , shrt  = lng.match(/_end$/) ? lng.substr(0, lng.length - 4) : ""
    , fn    = o[lng] || o[shrt]
    , retVal  = "NC" // NC = No Callback
    , args  = []
    , $P    = hasPane ? $Ps[pane] : 0
    ;
    if (hasPane && !$P) // a pane is specified, but does not exist!
      return retVal;
    if ( !hasPane && $.type(pane) === "boolean" ) {
      skipBoundEvents = pane; // allow pane param to be skipped for Layout callback
      pane = "";
    }

    // first trigger the callback set in the options
    if (fn) {
      try {
        // convert function name (string) to function object
        if (isStr( fn )) {
          if (fn.match(/,/)) {
            // function name cannot contain a comma, 
            // so must be a function name AND a parameter to pass
            args = fn.split(",")
            , fn = eval(args[0]);
          }
          else // just the name of an external function?
            fn = eval(fn);
        }
        // execute the callback, if exists
        if ($.isFunction( fn )) {
          if (args.length)
            retVal = g(fn)(args[1]); // pass the argument parsed from 'list'
          else if ( hasPane )
            // pass data: pane-name, pane-element, pane-state, pane-options, and layout-name
            retVal = g(fn)( pane, $Ps[pane], s, o, lName );
          else // must be a layout/container callback - pass suitable info
            retVal = g(fn)( Instance, s, o, lName );
        }
      }
      catch (ex) {
        _log( options.errors.callbackError.replace(/EVENT/, $.trim((pane || "") +" "+ lng)), false );
        if ($.type(ex) === "string" && string.length)
          _log("Exception:  "+ ex, false );
      }
    }

    // trigger additional events bound directly to the pane
    if (!skipBoundEvents && retVal !== false) {
      if ( hasPane ) { // PANE events can be bound to each pane-elements
        o = options[pane];
        s = state[pane];
        $P.triggerHandler("layoutpane"+ lng, [ pane, $P, s, o, lName ]);
        if (shrt)
          $P.triggerHandler("layoutpane"+ shrt, [ pane, $P, s, o, lName ]);
      }
      else { // LAYOUT events can be bound to the container-element
        $N.triggerHandler("layout"+ lng, [ Instance, s, o, lName ]);
        if (shrt)
          $N.triggerHandler("layout"+ shrt, [ Instance, s, o, lName ]);
      }
    }

    // ALWAYS resizeChildren after an onresize_end event - even during initialization
    // IGNORE onsizecontent_end event because causes child-layouts to resize TWICE
    if (hasPane && evtName === "onresize_end") // BAD: || evtName === "onsizecontent_end"
      resizeChildren(pane+"", true); // compiler hack -force string

    return retVal;

    function g (f) { return f; }; // compiler hack
  }


  /**
   * cure iframe display issues in IE & other browsers
   */
, _fixIframe = function (pane) {
    if (browser.mozilla) return; // skip FireFox - it auto-refreshes iframes onShow
    var $P = $Ps[pane];
    // if the 'pane' is an iframe, do it
    if (state[pane].tagName === "IFRAME")
      $P.css(_c.hidden).css(_c.visible); 
    else // ditto for any iframes INSIDE the pane
      $P.find('IFRAME').css(_c.hidden).css(_c.visible);
  }

  /**
   * @param  {string}   pane    Can accept ONLY a 'pane' (east, west, etc)
   * @param  {number=}    outerSize (optional) Can pass a width, allowing calculations BEFORE element is resized
   * @return {number}   Returns the innerHeight/Width of el by subtracting padding and borders
   */
, cssSize = function (pane, outerSize) {
    var fn = _c[pane].dir=="horz" ? cssH : cssW;
    return fn($Ps[pane], outerSize);
  }

  /**
   * @param  {string}   pane    Can accept ONLY a 'pane' (east, west, etc)
   * @return {Object}   Returns hash of minWidth & minHeight
   */
, cssMinDims = function (pane) {
    // minWidth/Height means CSS width/height = 1px
    var $P  = $Ps[pane]
    , dir = _c[pane].dir
    , d = {
        minWidth: 1001 - cssW($P, 1000)
      , minHeight:  1001 - cssH($P, 1000)
      }
    ;
    if (dir === "horz") d.minSize = d.minHeight;
    if (dir === "vert") d.minSize = d.minWidth;
    return d;
  }

  // TODO: see if these methods can be made more useful...
  // TODO: *maybe* return cssW/H from these so caller can use this info

  /**
   * @param {(string|!Object)}    el
   * @param {number=}       outerWidth
   * @param {boolean=}        [autoHide=false]
   */
, setOuterWidth = function (el, outerWidth, autoHide) {
    var $E = el, w;
    if (isStr(el)) $E = $Ps[el]; // west
    else if (!el.jquery) $E = $(el);
    w = cssW($E, outerWidth);
    $E.css({ width: w });
    if (w > 0) {
      if (autoHide && $E.data('autoHidden') && $E.innerHeight() > 0) {
        $E.show().data('autoHidden', false);
        if (!browser.mozilla) // FireFox refreshes iframes - IE does not
          // make hidden, then visible to 'refresh' display after animation
          $E.css(_c.hidden).css(_c.visible);
      }
    }
    else if (autoHide && !$E.data('autoHidden'))
      $E.hide().data('autoHidden', true);
  }

  /**
   * @param {(string|!Object)}    el
   * @param {number=}       outerHeight
   * @param {boolean=}        [autoHide=false]
   */
, setOuterHeight = function (el, outerHeight, autoHide) {
    var $E = el, h;
    if (isStr(el)) $E = $Ps[el]; // west
    else if (!el.jquery) $E = $(el);
    h = cssH($E, outerHeight);
    $E.css({ height: h, visibility: "visible" }); // may have been 'hidden' by sizeContent
    if (h > 0 && $E.innerWidth() > 0) {
      if (autoHide && $E.data('autoHidden')) {
        $E.show().data('autoHidden', false);
        if (!browser.mozilla) // FireFox refreshes iframes - IE does not
          $E.css(_c.hidden).css(_c.visible);
      }
    }
    else if (autoHide && !$E.data('autoHidden'))
      $E.hide().data('autoHidden', true);
  }


  /**
   * Converts any 'size' params to a pixel/integer size, if not already
   * If 'auto' or a decimal/percentage is passed as 'size', a pixel-size is calculated
   *
  /**
   * @param  {string}       pane
   * @param  {(string|number)=} size
   * @param  {string=}        [dir]
   * @return {number}
   */
, _parseSize = function (pane, size, dir) {
    if (!dir) dir = _c[pane].dir;

    if (isStr(size) && size.match(/%/))
      size = (size === '100%') ? -1 : parseInt(size, 10) / 100; // convert % to decimal

    if (size === 0)
      return 0;
    else if (size >= 1)
      return parseInt(size, 10);

    var o = options, avail = 0;
    if (dir=="horz") // north or south or center.minHeight
      avail = sC.innerHeight - ($Ps.north ? o.north.spacing_open : 0) - ($Ps.south ? o.south.spacing_open : 0);
    else if (dir=="vert") // east or west or center.minWidth
      avail = sC.innerWidth - ($Ps.west ? o.west.spacing_open : 0) - ($Ps.east ? o.east.spacing_open : 0);

    if (size === -1) // -1 == 100%
      return avail;
    else if (size > 0) // percentage, eg: .25
      return round(avail * size);
    else if (pane=="center")
      return 0;
    else { // size < 0 || size=='auto' || size==Missing || size==Invalid
      // auto-size the pane
      var dim = (dir === "horz" ? "height" : "width")
      , $P  = $Ps[pane]
      , $C  = dim === 'height' ? $Cs[pane] : false
      , vis = $.layout.showInvisibly($P) // show pane invisibly if hidden
      , szP = $P.css(dim) // SAVE current pane size
      , szC = $C ? $C.css(dim) : 0 // SAVE current content size
      ;
      $P.css(dim, "auto");
      if ($C) $C.css(dim, "auto");
      size = (dim === "height") ? $P.outerHeight() : $P.outerWidth(); // MEASURE
      $P.css(dim, szP).css(vis); // RESET size & visibility
      if ($C) $C.css(dim, szC);
      return size;
    }
  }

  /**
   * Calculates current 'size' (outer-width or outer-height) of a border-pane - optionally with 'pane-spacing' added
   *
   * @param  {(string|!Object)} pane
   * @param  {boolean=}     [inclSpace=false]
   * @return {number}       Returns EITHER Width for east/west panes OR Height for north/south panes
   */
, getPaneSize = function (pane, inclSpace) {
    var 
      $P  = $Ps[pane]
    , o = options[pane]
    , s = state[pane]
    , oSp = (inclSpace ? o.spacing_open : 0)
    , cSp = (inclSpace ? o.spacing_closed : 0)
    ;
    if (!$P || s.isHidden)
      return 0;
    else if (s.isClosed || (s.isSliding && inclSpace))
      return cSp;
    else if (_c[pane].dir === "horz")
      return $P.outerHeight() + oSp;
    else // dir === "vert"
      return $P.outerWidth() + oSp;
  }

  /**
   * Calculate min/max pane dimensions and limits for resizing
   *
   * @param  {string}   pane
   * @param  {boolean=} [slide=false]
   */
, setSizeLimits = function (pane, slide) {
    if (!isInitialized()) return;
    var 
      o       = options[pane]
    , s       = state[pane]
    , c       = _c[pane]
    , dir       = c.dir
    , type      = c.sizeType.toLowerCase()
    , isSliding   = (slide != undefined ? slide : s.isSliding) // only open() passes 'slide' param
    , $P        = $Ps[pane]
    , paneSpacing   = o.spacing_open
    //  measure the pane on the *opposite side* from this pane
    , altPane     = _c.oppositeEdge[pane]
    , altS      = state[altPane]
    , $altP     = $Ps[altPane]
    , altPaneSize   = (!$altP || altS.isVisible===false || altS.isSliding ? 0 : (dir=="horz" ? $altP.outerHeight() : $altP.outerWidth()))
    , altPaneSpacing  = ((!$altP || altS.isHidden ? 0 : options[altPane][ altS.isClosed !== false ? "spacing_closed" : "spacing_open" ]) || 0)
    //  limitSize prevents this pane from 'overlapping' opposite pane
    , containerSize = (dir=="horz" ? sC.innerHeight : sC.innerWidth)
    , minCenterDims = cssMinDims("center")
    , minCenterSize = dir=="horz" ? max(options.center.minHeight, minCenterDims.minHeight) : max(options.center.minWidth, minCenterDims.minWidth)
    //  if pane is 'sliding', then ignore center and alt-pane sizes - because 'overlays' them
    , limitSize   = (containerSize - paneSpacing - (isSliding ? 0 : (_parseSize("center", minCenterSize, dir) + altPaneSize + altPaneSpacing)))
    , minSize     = s.minSize = max( _parseSize(pane, o.minSize), cssMinDims(pane).minSize )
    , maxSize     = s.maxSize = min( (o.maxSize ? _parseSize(pane, o.maxSize) : 100000), limitSize )
    , r       = s.resizerPosition = {} // used to set resizing limits
    , top       = sC.inset.top
    , left      = sC.inset.left
    , W       = sC.innerWidth
    , H       = sC.innerHeight
    , rW        = o.spacing_open // subtract resizer-width to get top/left position for south/east
    ;
    switch (pane) {
      case "north": r.min = top + minSize;
              r.max = top + maxSize;
              break;
      case "west":  r.min = left + minSize;
              r.max = left + maxSize;
              break;
      case "south": r.min = top + H - maxSize - rW;
              r.max = top + H - minSize - rW;
              break;
      case "east":  r.min = left + W - maxSize - rW;
              r.max = left + W - minSize - rW;
              break;
    };
  }

  /**
   * Returns data for setting the size/position of center pane. Also used to set Height for east/west panes
   *
   * @return JSON  Returns a hash of all dimensions: top, bottom, left, right, (outer) width and (outer) height
   */
, calcNewCenterPaneDims = function () {
    var d = {
      top:  getPaneSize("north", true) // true = include 'spacing' value for pane
    , bottom: getPaneSize("south", true)
    , left: getPaneSize("west", true)
    , right:  getPaneSize("east", true)
    , width:  0
    , height: 0
    };

    // NOTE: sC = state.container
    // calc center-pane outer dimensions
    d.width   = sC.innerWidth - d.left - d.right;  // outerWidth
    d.height  = sC.innerHeight - d.bottom - d.top; // outerHeight
    // add the 'container border/padding' to get final positions relative to the container
    d.top   += sC.inset.top;
    d.bottom  += sC.inset.bottom;
    d.left    += sC.inset.left;
    d.right   += sC.inset.right;

    return d;
  }


  /**
   * @param {!Object}   el
   * @param {boolean=}    [allStates=false]
   */
, getHoverClasses = function (el, allStates) {
    var
      $El   = $(el)
    , type  = $El.data("layoutRole")
    , pane  = $El.data("layoutEdge")
    , o   = options[pane]
    , root  = o[type +"Class"]
    , _pane = "-"+ pane // eg: "-west"
    , _open = "-open"
    , _closed = "-closed"
    , _slide  = "-sliding"
    , _hover  = "-hover " // NOTE the trailing space
    , _state  = $El.hasClass(root+_closed) ? _closed : _open
    , _alt  = _state === _closed ? _open : _closed
    , classes = (root+_hover) + (root+_pane+_hover) + (root+_state+_hover) + (root+_pane+_state+_hover)
    ;
    if (allStates) // when 'removing' classes, also remove alternate-state classes
      classes += (root+_alt+_hover) + (root+_pane+_alt+_hover);

    if (type=="resizer" && $El.hasClass(root+_slide))
      classes += (root+_slide+_hover) + (root+_pane+_slide+_hover);

    return $.trim(classes);
  }
, addHover  = function (evt, el) {
    var $E = $(el || this);
    if (evt && $E.data("layoutRole") === "toggler")
      evt.stopPropagation(); // prevent triggering 'slide' on Resizer-bar
    $E.addClass( getHoverClasses($E) );
  }
, removeHover = function (evt, el) {
    var $E = $(el || this);
    $E.removeClass( getHoverClasses($E, true) );
  }

, onResizerEnter  = function (evt) { // ALSO called by toggler.mouseenter
    var pane  = $(this).data("layoutEdge")
    , s   = state[pane]
    , $d    = $(document)
    ;
    // ignore closed-panes and mouse moving back & forth over resizer!
    // also ignore if ANY pane is currently resizing
    if ( s.isResizing || state.paneResizing ) return;

    if (options.maskPanesEarly)
      showMasks( pane, { resizing: true });
  }
, onResizerLeave  = function (evt, el) {
    var e   = el || this // el is only passed when called by the timer
    , pane  = $(e).data("layoutEdge")
    , name  = pane +"ResizerLeave"
    , $d    = $(document)
    ;
    timer.clear(pane+"_openSlider"); // cancel slideOpen timer, if set
    timer.clear(name); // cancel enableSelection timer - may re/set below
    // this method calls itself on a timer because it needs to allow
    // enough time for dragging to kick-in and set the isResizing flag
    // dragging has a 100ms delay set, so this delay must be >100
    if (!el) // 1st call - mouseleave event
      timer.set(name, function(){ onResizerLeave(evt, e); }, 200);
    // if user is resizing, dragStop will reset everything, so skip it here
    else if (options.maskPanesEarly && !state.paneResizing) // 2nd call - by timer
      hideMasks();
  }

/*
 * ###########################
 *   INITIALIZATION METHODS
 * ###########################
 */

  /**
   * Initialize the layout - called automatically whenever an instance of layout is created
   *
   * @see  none - triggered onInit
   * @return  mixed true = fully initialized | false = panes not initialized (yet) | 'cancel' = abort
   */
, _create = function () {
    // initialize config/options
    initOptions();
    var o = options
    , s = state;

    // TEMP state so isInitialized returns true during init process
    s.creatingLayout = true;

    // init plugins for this layout, if there are any (eg: stateManagement)
    runPluginCallbacks( Instance, $.layout.onCreate );

    // options & state have been initialized, so now run beforeLoad callback
    // onload will CANCEL layout creation if it returns false
    if (false === _runCallbacks("onload_start"))
      return 'cancel';

    // initialize the container element
    _initContainer();

    // bind hotkey function - keyDown - if required
    initHotkeys();

    // bind window.onunload
    $(window).bind("unload."+ sID, unload);

    // init plugins for this layout, if there are any (eg: customButtons)
    runPluginCallbacks( Instance, $.layout.onLoad );

    // if layout elements are hidden, then layout WILL NOT complete initialization!
    // initLayoutElements will set initialized=true and run the onload callback IF successful
    if (o.initPanes) _initLayoutElements();

    delete s.creatingLayout;

    return state.initialized;
  }

  /**
   * Initialize the layout IF not already
   *
   * @see  All methods in Instance run this test
   * @return  boolean true = layoutElements have been initialized | false = panes are not initialized (yet)
   */
, isInitialized = function () {
    if (state.initialized || state.creatingLayout) return true; // already initialized
    else return _initLayoutElements();  // try to init panes NOW
  }

  /**
   * Initialize the layout - called automatically whenever an instance of layout is created
   *
   * @see  _create() & isInitialized
   * @param {boolean=}    [retry=false] // indicates this is a 2nd try
   * @return  An object pointer to the instance created
   */
, _initLayoutElements = function (retry) {
    // initialize config/options
    var o = options;
    // CANNOT init panes inside a hidden container!
    if (!$N.is(":visible")) {
      // handle Chrome bug where popup window 'has no height'
      // if layout is BODY element, try again in 50ms
      // SEE: http://layout.jquery-dev.com/samples/test_popup_window.html
      if ( !retry && browser.webkit && $N[0].tagName === "BODY" )
        setTimeout(function(){ _initLayoutElements(true); }, 50);
      return false;
    }

    // a center pane is required, so make sure it exists
    if (!getPane("center").length) {
      return _log( o.errors.centerPaneMissing );
    }

    // TEMP state so isInitialized returns true during init process
    state.creatingLayout = true;

    // update Container dims
    $.extend(sC, elDims( $N, o.inset )); // passing inset means DO NOT include insetX values

    // initialize all layout elements
    initPanes();  // size & position panes - calls initHandles() - which calls initResizable()

    if (o.scrollToBookmarkOnLoad) {
      var l = self.location;
      if (l.hash) l.replace( l.hash ); // scrollTo Bookmark
    }

    // check to see if this layout 'nested' inside a pane
    if (Instance.hasParentLayout)
      o.resizeWithWindow = false;
    // bind resizeAll() for 'this layout instance' to window.resize event
    else if (o.resizeWithWindow)
      $(window).bind("resize."+ sID, windowResize);

    delete state.creatingLayout;
    state.initialized = true;

    // init plugins for this layout, if there are any
    runPluginCallbacks( Instance, $.layout.onReady );

    // now run the onload callback, if exists
    _runCallbacks("onload_end");

    return true; // elements initialized successfully
  }

  /**
   * Initialize nested layouts for a specific pane - can optionally pass layout-options
   *
   * @param {(string|Object)} evt_or_pane The pane being opened, ie: north, south, east, or west
   * @param {Object=}     [opts]    Layout-options - if passed, will OVERRRIDE options[pane].children
   * @return  An object pointer to the layout instance created - or null
   */
, createChildren = function (evt_or_pane, opts) {
    var pane = evtPane.call(this, evt_or_pane)
    , $P  = $Ps[pane]
    ;
    if (!$P) return;
    var $C  = $Cs[pane]
    , s = state[pane]
    , o = options[pane]
    , sm  = options.stateManagement || {}
    , cos = opts ? (o.children = opts) : o.children
    ;
    if ( $.isPlainObject( cos ) )
      cos = [ cos ]; // convert a hash to a 1-elem array
    else if (!cos || !$.isArray( cos ))
      return;

    $.each( cos, function (idx, co) {
      if ( !$.isPlainObject( co ) ) return;

      // determine which element is supposed to be the 'child container'
      // if pane has a 'containerSelector' OR a 'content-div', use those instead of the pane
      var $containers = co.containerSelector ? $P.find( co.containerSelector ) : ($C || $P);

      $containers.each(function(){
        var $cont = $(this)
        , child = $cont.data("layout") // see if a child-layout ALREADY exists on this element
        ;
        // if no layout exists, but children are set, try to create the layout now
        if (!child) {
          // TODO: see about moving this to the stateManagement plugin, as a method
          // set a unique child-instance key for this layout, if not already set
          setInstanceKey({ container: $cont, options: co }, s );
          // If THIS layout has a hash in stateManagement.autoLoad,
          // then see if it also contains state-data for this child-layout
          // If so, copy the stateData to child.options.stateManagement.autoLoad
          if ( sm.includeChildren && state.stateData[pane] ) {
            //  THIS layout's state was cached when its state was loaded
            var paneChildren = state.stateData[pane].children || {}
            , childState  = paneChildren[ co.instanceKey ]
            , co_sm   = co.stateManagement || (co.stateManagement = { autoLoad: true })
            ;
            // COPY the stateData into the autoLoad key
            if ( co_sm.autoLoad === true && childState ) {
              co_sm.autoSave      = false; // disable autoSave because saving handled by parent-layout
              co_sm.includeChildren = true;  // cascade option - FOR NOW
              co_sm.autoLoad = $.extend(true, {}, childState); // COPY the state-hash
            }
          }

          // create the layout
          child = $cont.layout( co );

          // if successful, update data
          if (child) {
            // add the child and update all layout-pointers
            // MAY have already been done by child-layout calling parent.refreshChildren()
            refreshChildren( pane, child );
          }
        }
      });
    });
  }

, setInstanceKey = function (child, parentPaneState) {
    // create a named key for use in state and instance branches
    var $c  = child.container
    , o = child.options
    , sm  = o.stateManagement
    , key = o.instanceKey || $c.data("layoutInstanceKey")
    ;
    if (!key) key = (sm && sm.cookie ? sm.cookie.name : '') || o.name; // look for a name/key
    if (!key) key = "layout"+ (++parentPaneState.childIdx); // if no name/key found, generate one
    else key = key.replace(/[^\w-]/gi, '_').replace(/_{2,}/g, '_');  // ensure is valid as a hash key
    o.instanceKey = key;
    $c.data("layoutInstanceKey", key); // useful if layout is destroyed and then recreated
    return key;
  }

  /**
   * @param {string}    pane    The pane being opened, ie: north, south, east, or west
   * @param {Object=}   newChild  New child-layout Instance to add to this pane
   */
, refreshChildren = function (pane, newChild) {
    var $P  = $Ps[pane]
    , pC  = children[pane]
    , s = state[pane]
    , o
    ;
    // check for destroy()ed layouts and update the child pointers & arrays
    if ($.isPlainObject( pC )) {
      $.each( pC, function (key, child) {
        if (child.destroyed) delete pC[key]
      });
      // if no more children, remove the children hash
      if ($.isEmptyObject( pC ))
        pC = children[pane] = null; // clear children hash
    }

    // see if there is a directly-nested layout inside this pane
    // if there is, then there can be only ONE child-layout, so check that...
    if (!newChild && !pC) {
      newChild = $P.data("layout");
    }

    // if a newChild instance was passed, add it to children[pane]
    if (newChild) {
      // update child.state
      newChild.hasParentLayout = true; // set parent-flag in child
      // instanceKey is a key-name used in both state and children
      o = newChild.options;
      // set a unique child-instance key for this layout, if not already set
      setInstanceKey( newChild, s );
      // add pointer to pane.children hash
      if (!pC) pC = children[pane] = {}; // create an empty children hash
      pC[ o.instanceKey ] = newChild.container.data("layout"); // add childLayout instance
    }

    // ALWAYS refresh the pane.children alias, even if null
    Instance[pane].children = children[pane];

    // if newChild was NOT passed - see if there is a child layout NOW
    if (!newChild) {
      createChildren(pane); // MAY create a child and re-call this method
    }
  }

, windowResize = function () {
    var o = options
    , delay = Number(o.resizeWithWindowDelay);
    if (delay < 10) delay = 100; // MUST have a delay!
    // resizing uses a delay-loop because the resize event fires repeatly - except in FF, but delay anyway
    timer.clear("winResize"); // if already running
    timer.set("winResize", function(){
      timer.clear("winResize");
      timer.clear("winResizeRepeater");
      var dims = elDims( $N, o.inset );
      // only trigger resizeAll() if container has changed size
      if (dims.innerWidth !== sC.innerWidth || dims.innerHeight !== sC.innerHeight)
        resizeAll();
    }, delay);
    // ALSO set fixed-delay timer, if not already running
    if (!timer.data["winResizeRepeater"]) setWindowResizeRepeater();
  }

, setWindowResizeRepeater = function () {
    var delay = Number(options.resizeWithWindowMaxDelay);
    if (delay > 0)
      timer.set("winResizeRepeater", function(){ setWindowResizeRepeater(); resizeAll(); }, delay);
  }

, unload = function () {
    var o = options;

    _runCallbacks("onunload_start");

    // trigger plugin callabacks for this layout (eg: stateManagement)
    runPluginCallbacks( Instance, $.layout.onUnload );

    _runCallbacks("onunload_end");
  }

  /**
   * Validate and initialize container CSS and events
   *
   * @see  _create()
   */
, _initContainer = function () {
    var
      N   = $N[0] 
    , $H    = $("html")
    , tag   = sC.tagName = N.tagName
    , id    = sC.id = N.id
    , cls   = sC.className = N.className
    , o   = options
    , name  = o.name
    , props = "position,margin,padding,border"
    , css   = "layoutCSS"
    , CSS   = {}
    , hid   = "hidden" // used A LOT!
    //  see if this container is a 'pane' inside an outer-layout
    , parent  = $N.data("parentLayout") // parent-layout Instance
    , pane  = $N.data("layoutEdge")   // pane-name in parent-layout
    , isChild = parent && pane
    , num   = $.layout.cssNum
    , $parent, n
    ;
    // sC = state.container
    sC.selector = $N.selector.split(".slice")[0];
    sC.ref    = (o.name ? o.name +' layout / ' : '') + tag + (id ? "#"+id : cls ? '.['+cls+']' : ''); // used in messages
    sC.isBody = (tag === "BODY");

    // try to find a parent-layout
    if (!isChild && !sC.isBody) {
      $parent = $N.closest("."+ $.layout.defaults.panes.paneClass);
      parent  = $parent.data("parentLayout");
      pane  = $parent.data("layoutEdge");
      isChild = parent && pane;
    }

    $N  .data({
        layout: Instance
      , layoutContainer: sID // FLAG to indicate this is a layout-container - contains unique internal ID
      })
      .addClass(o.containerClass)
    ;
    var layoutMethods = {
      destroy:  ''
    , initPanes:  ''
    , resizeAll:  'resizeAll'
    , resize:   'resizeAll'
    };
    // loop hash and bind all methods - include layoutID namespacing
    for (name in layoutMethods) {
      $N.bind("layout"+ name.toLowerCase() +"."+ sID, Instance[ layoutMethods[name] || name ]);
    }

    // if this container is another layout's 'pane', then set child/parent pointers
    if (isChild) {
      // update parent flag
      Instance.hasParentLayout = true;
      // set pointers to THIS child-layout (Instance) in parent-layout
      parent.refreshChildren( pane, Instance );
    }

    // SAVE original container CSS for use in destroy()
    if (!$N.data(css)) {
      // handle props like overflow different for BODY & HTML - has 'system default' values
      if (sC.isBody) {
        // SAVE <BODY> CSS
        $N.data(css, $.extend( styles($N, props), {
          height:   $N.css("height")
        , overflow: $N.css("overflow")
        , overflowX:  $N.css("overflowX")
        , overflowY:  $N.css("overflowY")
        }));
        // ALSO SAVE <HTML> CSS
        $H.data(css, $.extend( styles($H, 'padding'), {
          height:   "auto" // FF would return a fixed px-size!
        , overflow: $H.css("overflow")
        , overflowX:  $H.css("overflowX")
        , overflowY:  $H.css("overflowY")
        }));
      }
      else // handle props normally for non-body elements
        $N.data(css, styles($N, props+",top,bottom,left,right,width,height,overflow,overflowX,overflowY") );
    }

    try {
      // common container CSS
      CSS = {
        overflow: hid
      , overflowX:  hid
      , overflowY:  hid
      };
      $N.css( CSS );

      if (o.inset && !$.isPlainObject(o.inset)) {
        // can specify a single number for equal outset all-around
        n = parseInt(o.inset, 10) || 0
        o.inset = {
          top:  n
        , bottom: n
        , left: n
        , right:  n
        };
      }

      // format html & body if this is a full page layout
      if (sC.isBody) {
        // if HTML has padding, use this as an outer-spacing around BODY
        if (!o.outset) {
          // use padding from parent-elem (HTML) as outset
          o.outset = {
            top:  num($H, "paddingTop")
          , bottom: num($H, "paddingBottom")
          , left: num($H, "paddingLeft")
          , right:  num($H, "paddingRight")
          };
        }
        else if (!$.isPlainObject(o.outset)) {
          // can specify a single number for equal outset all-around
          n = parseInt(o.outset, 10) || 0
          o.outset = {
            top:  n
          , bottom: n
          , left: n
          , right:  n
          };
        }
        // HTML
        $H.css( CSS ).css({
          height:   "100%"
        , border:   "none"  // no border or padding allowed when using height = 100%
        , padding:  0   // ditto
        , margin:   0
        });
        // BODY
        if (browser.isIE6) {
          // IE6 CANNOT use the trick of setting absolute positioning on all 4 sides - must have 'height'
          $N.css({
            width:    "100%"
          , height:   "100%"
          , border:   "none"  // no border or padding allowed when using height = 100%
          , padding:  0   // ditto
          , margin:   0
          , position: "relative"
          });
          // convert body padding to an inset option - the border cannot be measured in IE6!
          if (!o.inset) o.inset = elDims( $N ).inset;
        }
        else { // use absolute positioning for BODY to allow borders & padding without overflow
          $N.css({
            width:    "auto"
          , height:   "auto"
          , margin:   0
          , position: "absolute"  // allows for border and padding on BODY
          });
          // apply edge-positioning created above
          $N.css( o.outset );
        }
        // set current layout-container dimensions
        $.extend(sC, elDims( $N, o.inset )); // passing inset means DO NOT include insetX values
      }
      else {
        // container MUST have 'position'
        var p = $N.css("position");
        if (!p || !p.match(/(fixed|absolute|relative)/))
          $N.css("position","relative");

        // set current layout-container dimensions
        if ( $N.is(":visible") ) {
          $.extend(sC, elDims( $N, o.inset )); // passing inset means DO NOT change insetX (padding) values
          if (sC.innerHeight < 1) // container has no 'height' - warn developer
            _log( o.errors.noContainerHeight.replace(/CONTAINER/, sC.ref) );
        }
      }

      // if container has min-width/height, then enable scrollbar(s)
      if ( num($N, "minWidth")  ) $N.parent().css("overflowX","auto");
      if ( num($N, "minHeight") ) $N.parent().css("overflowY","auto");

    } catch (ex) {}
  }

  /**
   * Bind layout hotkeys - if options enabled
   *
   * @see  _create() and addPane()
   * @param {string=} [panes=""]  The edge(s) to process
   */
, initHotkeys = function (panes) {
    panes = panes ? panes.split(",") : _c.borderPanes;
    // bind keyDown to capture hotkeys, if option enabled for ANY pane
    $.each(panes, function (i, pane) {
      var o = options[pane];
      if (o.enableCursorHotkey || o.customHotkey) {
        $(document).bind("keydown."+ sID, keyDown); // only need to bind this ONCE
        return false; // BREAK - binding was done
      }
    });
  }

  /**
   * Build final OPTIONS data
   *
   * @see  _create()
   */
, initOptions = function () {
    var data, d, pane, key, val, i, c, o;

    // reprocess user's layout-options to have correct options sub-key structure
    opts = $.layout.transformData( opts, true ); // panes = default subkey

    // auto-rename old options for backward compatibility
    opts = $.layout.backwardCompatibility.renameAllOptions( opts );

    // if user-options has 'panes' key (pane-defaults), clean it...
    if (!$.isEmptyObject(opts.panes)) {
      // REMOVE any pane-defaults that MUST be set per-pane
      data = $.layout.optionsMap.noDefault;
      for (i=0, c=data.length; i<c; i++) {
        key = data[i];
        delete opts.panes[key]; // OK if does not exist
      }
      // REMOVE any layout-options specified under opts.panes
      data = $.layout.optionsMap.layout;
      for (i=0, c=data.length; i<c; i++) {
        key = data[i];
        delete opts.panes[key]; // OK if does not exist
      }
    }

    // MOVE any NON-layout-options from opts-root to opts.panes
    data = $.layout.optionsMap.layout;
    var rootKeys = $.layout.config.optionRootKeys;
    for (key in opts) {
      val = opts[key];
      if ($.inArray(key, rootKeys) < 0 && $.inArray(key, data) < 0) {
        if (!opts.panes[key])
          opts.panes[key] = $.isPlainObject(val) ? $.extend(true, {}, val) : val;
        delete opts[key]
      }
    }

    // START by updating ALL options from opts
    $.extend(true, options, opts);

    // CREATE final options (and config) for EACH pane
    $.each(_c.allPanes, function (i, pane) {

      // apply 'pane-defaults' to CONFIG.[PANE]
      _c[pane] = $.extend(true, {}, _c.panes, _c[pane]);

      d = options.panes;
      o = options[pane];

      // center-pane uses SOME keys in defaults.panes branch
      if (pane === 'center') {
        // ONLY copy keys from opts.panes listed in: $.layout.optionsMap.center
        data = $.layout.optionsMap.center;    // list of 'center-pane keys'
        for (i=0, c=data.length; i<c; i++) {  // loop the list...
          key = data[i];
          // only need to use pane-default if pane-specific value not set
          if (!opts.center[key] && (opts.panes[key] || !o[key]))
            o[key] = d[key]; // pane-default
        }
      }
      else {
        // border-panes use ALL keys in defaults.panes branch
        o = options[pane] = $.extend(true, {}, d, o); // re-apply pane-specific opts AFTER pane-defaults
        createFxOptions( pane );
        // ensure all border-pane-specific base-classes exist
        if (!o.resizerClass)  o.resizerClass  = "ui-layout-resizer";
        if (!o.togglerClass)  o.togglerClass  = "ui-layout-toggler";
      }
      // ensure we have base pane-class (ALL panes)
      if (!o.paneClass) o.paneClass = "ui-layout-pane";
    });

    // update options.zIndexes if a zIndex-option specified
    var zo  = opts.zIndex
    , z = options.zIndexes;
    if (zo > 0) {
      z.pane_normal   = zo;
      z.content_mask    = max(zo+1, z.content_mask);  // MIN = +1
      z.resizer_normal  = max(zo+2, z.resizer_normal);  // MIN = +2
    }

    // DELETE 'panes' key now that we are done - values were copied to EACH pane
    delete options.panes;


    function createFxOptions ( pane ) {
      var o = options[pane]
      , d = options.panes;
      // ensure fxSettings key to avoid errors
      if (!o.fxSettings) o.fxSettings = {};
      if (!d.fxSettings) d.fxSettings = {};

      $.each(["_open","_close","_size"], function (i,n) { 
        var
          sName   = "fxName"+ n
        , sSpeed    = "fxSpeed"+ n
        , sSettings = "fxSettings"+ n
          // recalculate fxName according to specificity rules
        , fxName = o[sName] =
            o[sName]  // options.west.fxName_open
          ||  d[sName]  // options.panes.fxName_open
          ||  o.fxName  // options.west.fxName
          ||  d.fxName  // options.panes.fxName
          ||  "none"    // MEANS $.layout.defaults.panes.fxName == "" || false || null || 0
        , fxExists  = $.effects && ($.effects[fxName] || ($.effects.effect && $.effects.effect[fxName]))
        ;
        // validate fxName to ensure is valid effect - MUST have effect-config data in options.effects
        if (fxName === "none" || !options.effects[fxName] || !fxExists)
          fxName = o[sName] = "none"; // effect not loaded OR unrecognized fxName

        // set vars for effects subkeys to simplify logic
        var fx    = options.effects[fxName] || {} // effects.slide
        , fx_all  = fx.all  || null       // effects.slide.all
        , fx_pane = fx[pane]  || null       // effects.slide.west
        ;
        // create fxSpeed[_open|_close|_size]
        o[sSpeed] =
          o[sSpeed]       // options.west.fxSpeed_open
        ||  d[sSpeed]       // options.west.fxSpeed_open
        ||  o.fxSpeed       // options.west.fxSpeed
        ||  d.fxSpeed       // options.panes.fxSpeed
        ||  null          // DEFAULT - let fxSetting.duration control speed
        ;
        // create fxSettings[_open|_close|_size]
        o[sSettings] = $.extend(
          true
        , {}
        , fx_all          // effects.slide.all
        , fx_pane         // effects.slide.west
        , d.fxSettings      // options.panes.fxSettings
        , o.fxSettings      // options.west.fxSettings
        , d[sSettings]      // options.panes.fxSettings_open
        , o[sSettings]      // options.west.fxSettings_open
        );
      });

      // DONE creating action-specific-settings for this pane,
      // so DELETE generic options - are no longer meaningful
      delete o.fxName;
      delete o.fxSpeed;
      delete o.fxSettings;
    }
  }

  /**
   * Initialize module objects, styling, size and position for all panes
   *
   * @see  _initElements()
   * @param {string}  pane    The pane to process
   */
, getPane = function (pane) {
    var sel = options[pane].paneSelector
    if (sel.substr(0,1)==="#") // ID selector
      // NOTE: elements selected 'by ID' DO NOT have to be 'children'
      return $N.find(sel).eq(0);
    else { // class or other selector
      var $P = $N.children(sel).eq(0);
      // look for the pane nested inside a 'form' element
      return $P.length ? $P : $N.children("form:first").children(sel).eq(0);
    }
  }

  /**
   * @param {Object=}   evt
   */
, initPanes = function (evt) {
    // stopPropagation if called by trigger("layoutinitpanes") - use evtPane utility 
    evtPane(evt);

    // NOTE: do north & south FIRST so we can measure their height - do center LAST
    $.each(_c.allPanes, function (idx, pane) {
      addPane( pane, true );
    });

    // init the pane-handles NOW in case we have to hide or close the pane below
    initHandles();

    // now that all panes have been initialized and initially-sized,
    // make sure there is really enough space available for each pane
    $.each(_c.borderPanes, function (i, pane) {
      if ($Ps[pane] && state[pane].isVisible) { // pane is OPEN
        setSizeLimits(pane);
        makePaneFit(pane); // pane may be Closed, Hidden or Resized by makePaneFit()
      }
    });
    // size center-pane AGAIN in case we 'closed' a border-pane in loop above
    sizeMidPanes("center");

    //  Chrome/Webkit sometimes fires callbacks BEFORE it completes resizing!
    //  Before RC30.3, there was a 10ms delay here, but that caused layout 
    //  to load asynchrously, which is BAD, so try skipping delay for now

    // process pane contents and callbacks, and init/resize child-layout if exists
    $.each(_c.allPanes, function (idx, pane) {
      afterInitPane(pane);
    });
  }

  /**
   * Add a pane to the layout - subroutine of initPanes()
   *
   * @see  initPanes()
   * @param {string}  pane      The pane to process
   * @param {boolean=}  [force=false] Size content after init
   */
, addPane = function (pane, force) {
    if ( !force && !isInitialized() ) return;
    var
      o   = options[pane]
    , s   = state[pane]
    , c   = _c[pane]
    , dir   = c.dir
    , fx    = s.fx
    , spacing = o.spacing_open || 0
    , isCenter = (pane === "center")
    , CSS   = {}
    , $P    = $Ps[pane]
    , size, minSize, maxSize, child
    ;
    // if pane-pointer already exists, remove the old one first
    if ($P)
      removePane( pane, false, true, false );
    else
      $Cs[pane] = false; // init

    $P = $Ps[pane] = getPane(pane);
    if (!$P.length) {
      $Ps[pane] = false; // logic
      return;
    }

    // SAVE original Pane CSS
    if (!$P.data("layoutCSS")) {
      var props = "position,top,left,bottom,right,width,height,overflow,zIndex,display,backgroundColor,padding,margin,border";
      $P.data("layoutCSS", styles($P, props));
    }

    // create alias for pane data in Instance - initHandles will add more
    Instance[pane] = {
      name:   pane
    , pane:   $Ps[pane]
    , content:  $Cs[pane]
    , options:  options[pane]
    , state:    state[pane]
    , children: children[pane]
    };

    // add classes, attributes & events
    $P  .data({
        parentLayout: Instance    // pointer to Layout Instance
      , layoutPane:   Instance[pane]  // NEW pointer to pane-alias-object
      , layoutEdge:   pane
      , layoutRole:   "pane"
      })
      .css(c.cssReq).css("zIndex", options.zIndexes.pane_normal)
      .css(o.applyDemoStyles ? c.cssDemo : {}) // demo styles
      .addClass( o.paneClass +" "+ o.paneClass+"-"+pane ) // default = "ui-layout-pane ui-layout-pane-west" - may be a dupe of 'paneSelector'
      .bind("mouseenter."+ sID, addHover )
      .bind("mouseleave."+ sID, removeHover )
      ;
    var paneMethods = {
        hide:       ''
      , show:       ''
      , toggle:       ''
      , close:        ''
      , open:       ''
      , slideOpen:      ''
      , slideClose:     ''
      , slideToggle:    ''
      , size:       'sizePane'
      , sizePane:     'sizePane'
      , sizeContent:    ''
      , sizeHandles:    ''
      , enableClosable:   ''
      , disableClosable:  ''
      , enableSlideable:  ''
      , disableSlideable: ''
      , enableResizable:  ''
      , disableResizable: ''
      , swapPanes:      'swapPanes'
      , swap:       'swapPanes'
      , move:       'swapPanes'
      , removePane:     'removePane'
      , remove:       'removePane'
      , createChildren:   ''
      , resizeChildren:   ''
      , resizeAll:      'resizeAll'
      , resizeLayout:   'resizeAll'
      }
    , name;
    // loop hash and bind all methods - include layoutID namespacing
    for (name in paneMethods) {
      $P.bind("layoutpane"+ name.toLowerCase() +"."+ sID, Instance[ paneMethods[name] || name ]);
    }

    // see if this pane has a 'scrolling-content element'
    initContent(pane, false); // false = do NOT sizeContent() - called later

    if (!isCenter) {
      // call _parseSize AFTER applying pane classes & styles - but before making visible (if hidden)
      // if o.size is auto or not valid, then MEASURE the pane and use that as its 'size'
      size  = s.size = _parseSize(pane, o.size);
      minSize = _parseSize(pane,o.minSize) || 1;
      maxSize = _parseSize(pane,o.maxSize) || 100000;
      if (size > 0) size = max(min(size, maxSize), minSize);
      s.autoResize = o.autoResize; // used with percentage sizes

      // state for border-panes
      s.isClosed  = false; // true = pane is closed
      s.isSliding = false; // true = pane is currently open by 'sliding' over adjacent panes
      s.isResizing= false; // true = pane is in process of being resized
      s.isHidden  = false; // true = pane is hidden - no spacing, resizer or toggler is visible!

      // array for 'pin buttons' whose classNames are auto-updated on pane-open/-close
      if (!s.pins) s.pins = [];
    }
    //  states common to ALL panes
    s.tagName = $P[0].tagName;
    s.edge    = pane;   // useful if pane is (or about to be) 'swapped' - easy find out where it is (or is going)
    s.noRoom  = false;  // true = pane 'automatically' hidden due to insufficient room - will unhide automatically
    s.isVisible = true;   // false = pane is invisible - closed OR hidden - simplify logic

    // init pane positioning
    setPanePosition( pane );

    // if pane is not visible, 
    if (dir === "horz") // north or south pane
      CSS.height = cssH($P, size);
    else if (dir === "vert") // east or west pane
      CSS.width = cssW($P, size);
    //else if (isCenter) {}

    $P.css(CSS); // apply size -- top, bottom & height will be set by sizeMidPanes
    if (dir != "horz") sizeMidPanes(pane, true); // true = skipCallback

    // if manually adding a pane AFTER layout initialization, then...
    if (state.initialized) {
      initHandles( pane );
      initHotkeys( pane );
    }

    // close or hide the pane if specified in settings
    if (o.initClosed && o.closable && !o.initHidden)
      close(pane, true, true); // true, true = force, noAnimation
    else if (o.initHidden || o.initClosed)
      hide(pane); // will be completely invisible - no resizer or spacing
    else if (!s.noRoom)
      // make the pane visible - in case was initially hidden
      $P.css("display","block");
    // ELSE setAsOpen() - called later by initHandles()

    // RESET visibility now - pane will appear IF display:block
    $P.css("visibility","visible");

    // check option for auto-handling of pop-ups & drop-downs
    if (o.showOverflowOnHover)
      $P.hover( allowOverflow, resetOverflow );

    // if manually adding a pane AFTER layout initialization, then...
    if (state.initialized) {
      afterInitPane( pane );
    }
  }

, afterInitPane = function (pane) {
    var $P  = $Ps[pane]
    , s = state[pane]
    , o = options[pane]
    ;
    if (!$P) return;

    // see if there is a directly-nested layout inside this pane
    if ($P.data("layout"))
      refreshChildren( pane, $P.data("layout") );

    // process pane contents and callbacks, and init/resize child-layout if exists
    if (s.isVisible) { // pane is OPEN
      if (state.initialized) // this pane was added AFTER layout was created
        resizeAll(); // will also sizeContent
      else
        sizeContent(pane);

      if (o.triggerEventsOnLoad)
        _runCallbacks("onresize_end", pane);
      else // automatic if onresize called, otherwise call it specifically
        // resize child - IF inner-layout already exists (created before this layout)
        resizeChildren(pane, true); // a previously existing childLayout
    }

    // init childLayouts - even if pane is not visible
    if (o.initChildren && o.children)
      createChildren(pane);
  }

  /**
   * @param {string=} panes   The pane(s) to process
   */
, setPanePosition = function (panes) {
    panes = panes ? panes.split(",") : _c.borderPanes;

    // create toggler DIVs for each pane, and set object pointers for them, eg: $R.north = north toggler DIV
    $.each(panes, function (i, pane) {
      var $P  = $Ps[pane]
      , $R  = $Rs[pane]
      , o = options[pane]
      , s = state[pane]
      , side =  _c[pane].side
      , CSS = {}
      ;
      if (!$P) return; // pane does not exist - skip

      // set css-position to account for container borders & padding
      switch (pane) {
        case "north":   CSS.top   = sC.inset.top;
                CSS.left  = sC.inset.left;
                CSS.right = sC.inset.right;
                break;
        case "south":   CSS.bottom  = sC.inset.bottom;
                CSS.left  = sC.inset.left;
                CSS.right   = sC.inset.right;
                break;
        case "west":  CSS.left  = sC.inset.left; // top, bottom & height set by sizeMidPanes()
                break;
        case "east":  CSS.right   = sC.inset.right; // ditto
                break;
        case "center":  // top, left, width & height set by sizeMidPanes()
      }
      // apply position
      $P.css(CSS); 

      // update resizer position
      if ($R && s.isClosed)
        $R.css(side, sC.inset[side]);
      else if ($R && !s.isHidden)
        $R.css(side, sC.inset[side] + getPaneSize(pane));
    });
  }

  /**
   * Initialize module objects, styling, size and position for all resize bars and toggler buttons
   *
   * @see  _create()
   * @param {string=} [panes=""]  The edge(s) to process
   */
, initHandles = function (panes) {
    panes = panes ? panes.split(",") : _c.borderPanes;

    // create toggler DIVs for each pane, and set object pointers for them, eg: $R.north = north toggler DIV
    $.each(panes, function (i, pane) {
      var $P    = $Ps[pane];
      $Rs[pane] = false; // INIT
      $Ts[pane] = false;
      if (!$P) return; // pane does not exist - skip

      var o   = options[pane]
      , s   = state[pane]
      , c   = _c[pane]
      , paneId  = o.paneSelector.substr(0,1) === "#" ? o.paneSelector.substr(1) : ""
      , rClass  = o.resizerClass
      , tClass  = o.togglerClass
      , spacing = (s.isVisible ? o.spacing_open : o.spacing_closed)
      , _pane = "-"+ pane // used for classNames
      , _state  = (s.isVisible ? "-open" : "-closed") // used for classNames
      , I   = Instance[pane]
        // INIT RESIZER BAR
      , $R    = I.resizer = $Rs[pane] = $("<div></div>")
        // INIT TOGGLER BUTTON
      , $T    = I.toggler = (o.closable ? $Ts[pane] = $("<div></div>") : false)
      ;

      //if (s.isVisible && o.resizable) ... handled by initResizable
      if (!s.isVisible && o.slidable)
        $R.attr("title", o.tips.Slide).css("cursor", o.sliderCursor);

      $R  // if paneSelector is an ID, then create a matching ID for the resizer, eg: "#paneLeft" => "paneLeft-resizer"
        .attr("id", paneId ? paneId +"-resizer" : "" )
        .data({
          parentLayout: Instance
        , layoutPane:   Instance[pane]  // NEW pointer to pane-alias-object
        , layoutEdge:   pane
        , layoutRole:   "resizer"
        })
        .css(_c.resizers.cssReq).css("zIndex", options.zIndexes.resizer_normal)
        .css(o.applyDemoStyles ? _c.resizers.cssDemo : {}) // add demo styles
        .addClass(rClass +" "+ rClass+_pane)
        .hover(addHover, removeHover) // ALWAYS add hover-classes, even if resizing is not enabled - handle with CSS instead
        .hover(onResizerEnter, onResizerLeave) // ALWAYS NEED resizer.mouseleave to balance toggler.mouseenter
        .mousedown($.layout.disableTextSelection) // prevent text-selection OUTSIDE resizer
        .mouseup($.layout.enableTextSelection)    // not really necessary, but just in case
        .appendTo($N) // append DIV to container
      ;
      if ($.fn.disableSelection)
        $R.disableSelection(); // prevent text-selection INSIDE resizer
      if (o.resizerDblClickToggle)
        $R.bind("dblclick."+ sID, toggle );

      if ($T) {
        $T  // if paneSelector is an ID, then create a matching ID for the resizer, eg: "#paneLeft" => "#paneLeft-toggler"
          .attr("id", paneId ? paneId +"-toggler" : "" )
          .data({
            parentLayout: Instance
          , layoutPane:   Instance[pane]  // NEW pointer to pane-alias-object
          , layoutEdge:   pane
          , layoutRole:   "toggler"
          })
          .css(_c.togglers.cssReq) // add base/required styles
          .css(o.applyDemoStyles ? _c.togglers.cssDemo : {}) // add demo styles
          .addClass(tClass +" "+ tClass+_pane)
          .hover(addHover, removeHover) // ALWAYS add hover-classes, even if toggling is not enabled - handle with CSS instead
          .bind("mouseenter", onResizerEnter) // NEED toggler.mouseenter because mouseenter MAY NOT fire on resizer
          .appendTo($R) // append SPAN to resizer DIV
        ;
        // ADD INNER-SPANS TO TOGGLER
        if (o.togglerContent_open) // ui-layout-open
          $("<span>"+ o.togglerContent_open +"</span>")
            .data({
              layoutEdge:   pane
            , layoutRole:   "togglerContent"
            })
            .data("layoutRole", "togglerContent")
            .data("layoutEdge", pane)
            .addClass("content content-open")
            .css("display","none")
            .appendTo( $T )
            //.hover( addHover, removeHover ) // use ui-layout-toggler-west-hover .content-open instead!
          ;
        if (o.togglerContent_closed) // ui-layout-closed
          $("<span>"+ o.togglerContent_closed +"</span>")
            .data({
              layoutEdge:   pane
            , layoutRole:   "togglerContent"
            })
            .addClass("content content-closed")
            .css("display","none")
            .appendTo( $T )
            //.hover( addHover, removeHover ) // use ui-layout-toggler-west-hover .content-closed instead!
          ;
        // ADD TOGGLER.click/.hover
        enableClosable(pane);
      }

      // add Draggable events
      initResizable(pane);

      // ADD CLASSNAMES & SLIDE-BINDINGS - eg: class="resizer resizer-west resizer-open"
      if (s.isVisible)
        setAsOpen(pane);  // onOpen will be called, but NOT onResize
      else {
        setAsClosed(pane);  // onClose will be called
        bindStartSlidingEvents(pane, true); // will enable events IF option is set
      }

    });

    // SET ALL HANDLE DIMENSIONS
    sizeHandles();
  }


  /**
   * Initialize scrolling ui-layout-content div - if exists
   *
   * @see  initPane() - or externally after an Ajax injection
   * @param {string}  pane      The pane to process
   * @param {boolean=}  [resize=true] Size content after init
   */
, initContent = function (pane, resize) {
    if (!isInitialized()) return;
    var 
      o = options[pane]
    , sel = o.contentSelector
    , I = Instance[pane]
    , $P  = $Ps[pane]
    , $C
    ;
    if (sel) $C = I.content = $Cs[pane] = (o.findNestedContent)
      ? $P.find(sel).eq(0) // match 1-element only
      : $P.children(sel).eq(0)
    ;
    if ($C && $C.length) {
      $C.data("layoutRole", "content");
      // SAVE original Content CSS
      if (!$C.data("layoutCSS"))
        $C.data("layoutCSS", styles($C, "height"));
      $C.css( _c.content.cssReq );
      if (o.applyDemoStyles) {
        $C.css( _c.content.cssDemo ); // add padding & overflow: auto to content-div
        $P.css( _c.content.cssDemoPane ); // REMOVE padding/scrolling from pane
      }
      // ensure no vertical scrollbar on pane - will mess up measurements
      if ($P.css("overflowX").match(/(scroll|auto)/)) {
        $P.css("overflow", "hidden");
      }
      state[pane].content = {}; // init content state
      if (resize !== false) sizeContent(pane);
      // sizeContent() is called AFTER init of all elements
    }
    else
      I.content = $Cs[pane] = false;
  }


  /**
   * Add resize-bars to all panes that specify it in options
   * -dependancy: $.fn.resizable - will skip if not found
   *
   * @see  _create()
   * @param {string=} [panes=""]  The edge(s) to process
   */
, initResizable = function (panes) {
    var draggingAvailable = $.layout.plugins.draggable
    , side // set in start()
    ;
    panes = panes ? panes.split(",") : _c.borderPanes;

    $.each(panes, function (idx, pane) {
      var o = options[pane];
      if (!draggingAvailable || !$Ps[pane] || !o.resizable) {
        o.resizable = false;
        return true; // skip to next
      }

      var s   = state[pane]
      , z   = options.zIndexes
      , c   = _c[pane]
      , side  = c.dir=="horz" ? "top" : "left"
      , $P    = $Ps[pane]
      , $R    = $Rs[pane]
      , base  = o.resizerClass
      , lastPos = 0 // used when live-resizing
      , r, live // set in start because may change
      //  'drag' classes are applied to the ORIGINAL resizer-bar while dragging is in process
      , resizerClass    = base+"-drag"        // resizer-drag
      , resizerPaneClass  = base+"-"+pane+"-drag"   // resizer-north-drag
      //  'helper' class is applied to the CLONED resizer-bar while it is being dragged
      , helperClass     = base+"-dragging"      // resizer-dragging
      , helperPaneClass   = base+"-"+pane+"-dragging" // resizer-north-dragging
      , helperLimitClass  = base+"-dragging-limit"  // resizer-drag
      , helperPaneLimitClass = base+"-"+pane+"-dragging-limit"  // resizer-north-drag
      , helperClassesSet  = false           // logic var
      ;

      if (!s.isClosed)
        $R.attr("title", o.tips.Resize)
          .css("cursor", o.resizerCursor); // n-resize, s-resize, etc

      $R.draggable({
        containment:  $N[0] // limit resizing to layout container
      , axis:     (c.dir=="horz" ? "y" : "x") // limit resizing to horz or vert axis
      , delay:      0
      , distance:   1
      , grid:     o.resizingGrid
      //  basic format for helper - style it using class: .ui-draggable-dragging
      , helper:     "clone"
      , opacity:    o.resizerDragOpacity
      , addClasses:   false // avoid ui-state-disabled class when disabled
      //, iframeFix:    o.draggableIframeFix // TODO: consider using when bug is fixed
      , zIndex:     z.resizer_drag

      , start: function (e, ui) {
          // REFRESH options & state pointers in case we used swapPanes
          o = options[pane];
          s = state[pane];
          // re-read options
          live = o.livePaneResizing;

          // ondrag_start callback - will CANCEL hide if returns false
          // TODO: dragging CANNOT be cancelled like this, so see if there is a way?
          if (false === _runCallbacks("ondrag_start", pane)) return false;

          s.isResizing    = true; // prevent pane from closing while resizing
          state.paneResizing  = pane; // easy to see if ANY pane is resizing
          timer.clear(pane+"_closeSlider"); // just in case already triggered

          // SET RESIZER LIMITS - used in drag()
          setSizeLimits(pane); // update pane/resizer state
          r = s.resizerPosition;
          lastPos = ui.position[ side ]

          $R.addClass( resizerClass +" "+ resizerPaneClass ); // add drag classes
          helperClassesSet = false; // reset logic var - see drag()

          // MASK PANES CONTAINING IFRAMES, APPLETS OR OTHER TROUBLESOME ELEMENTS
          showMasks( pane, { resizing: true });
        }

      , drag: function (e, ui) {
          if (!helperClassesSet) { // can only add classes after clone has been added to the DOM
            //$(".ui-draggable-dragging")
            ui.helper
              .addClass( helperClass +" "+ helperPaneClass ) // add helper classes
              .css({ right: "auto", bottom: "auto" }) // fix dir="rtl" issue
              .children().css("visibility","hidden")  // hide toggler inside dragged resizer-bar
            ;
            helperClassesSet = true;
            // draggable bug!? RE-SET zIndex to prevent E/W resize-bar showing through N/S pane!
            if (s.isSliding) $Ps[pane].css("zIndex", z.pane_sliding);
          }
          // CONTAIN RESIZER-BAR TO RESIZING LIMITS
          var limit = 0;
          if (ui.position[side] < r.min) {
            ui.position[side] = r.min;
            limit = -1;
          }
          else if (ui.position[side] > r.max) {
            ui.position[side] = r.max;
            limit = 1;
          }
          // ADD/REMOVE dragging-limit CLASS
          if (limit) {
            ui.helper.addClass( helperLimitClass +" "+ helperPaneLimitClass ); // at dragging-limit
            window.defaultStatus = (limit>0 && pane.match(/(north|west)/)) || (limit<0 && pane.match(/(south|east)/)) ? o.tips.maxSizeWarning : o.tips.minSizeWarning;
          }
          else {
            ui.helper.removeClass( helperLimitClass +" "+ helperPaneLimitClass ); // not at dragging-limit
            window.defaultStatus = "";
          }
          // DYNAMICALLY RESIZE PANES IF OPTION ENABLED
          // won't trigger unless resizer has actually moved!
          if (live && Math.abs(ui.position[side] - lastPos) >= o.liveResizingTolerance) {
            lastPos = ui.position[side];
            resizePanes(e, ui, pane)
          }
        }

      , stop: function (e, ui) {
          $('body').enableSelection(); // RE-ENABLE TEXT SELECTION
          window.defaultStatus = ""; // clear 'resizing limit' message from statusbar
          $R.removeClass( resizerClass +" "+ resizerPaneClass ); // remove drag classes from Resizer
          s.isResizing    = false;
          state.paneResizing  = false; // easy to see if ANY pane is resizing
          resizePanes(e, ui, pane, true); // true = resizingDone
        }

      });
    });

    /**
     * resizePanes
     *
     * Sub-routine called from stop() - and drag() if livePaneResizing
     *
     * @param {!Object}   evt
     * @param {!Object}   ui
     * @param {string}    pane
     * @param {boolean=}    [resizingDone=false]
     */
    var resizePanes = function (evt, ui, pane, resizingDone) {
      var dragPos = ui.position
      , c   = _c[pane]
      , o   = options[pane]
      , s   = state[pane]
      , resizerPos
      ;
      switch (pane) {
        case "north": resizerPos = dragPos.top; break;
        case "west":  resizerPos = dragPos.left; break;
        case "south": resizerPos = sC.layoutHeight - dragPos.top  - o.spacing_open; break;
        case "east":  resizerPos = sC.layoutWidth  - dragPos.left - o.spacing_open; break;
      };
      // remove container margin from resizer position to get the pane size
      var newSize = resizerPos - sC.inset[c.side];

      // Disable OR Resize Mask(s) created in drag.start
      if (!resizingDone) {
        // ensure we meet liveResizingTolerance criteria
        if (Math.abs(newSize - s.size) < o.liveResizingTolerance)
          return; // SKIP resize this time
        // resize the pane
        manualSizePane(pane, newSize, false, true); // true = noAnimation
        sizeMasks(); // resize all visible masks
      }
      else { // resizingDone
        // ondrag_end callback
        if (false !== _runCallbacks("ondrag_end", pane))
          manualSizePane(pane, newSize, false, true); // true = noAnimation
        hideMasks(true); // true = force hiding all masks even if one is 'sliding'
        if (s.isSliding) // RE-SHOW 'object-masks' so objects won't show through sliding pane
          showMasks( pane, { resizing: true });
      }
    };
  }

  /**
   *  sizeMask
   *
   *  Needed to overlay a DIV over an IFRAME-pane because mask CANNOT be *inside* the pane
   *  Called when mask created, and during livePaneResizing
   */
, sizeMask = function () {
    var $M    = $(this)
    , pane  = $M.data("layoutMask") // eg: "west"
    , s   = state[pane]
    ;
    // only masks over an IFRAME-pane need manual resizing
    if (s.tagName == "IFRAME" && s.isVisible) // no need to mask closed/hidden panes
      $M.css({
        top:  s.offsetTop
      , left: s.offsetLeft
      , width:  s.outerWidth
      , height: s.outerHeight
      });
    /* ALT Method...
    var $P = $Ps[pane];
    $M.css( $P.position() ).css({ width: $P[0].offsetWidth, height: $P[0].offsetHeight });
    */
  }
, sizeMasks = function () {
    $Ms.each( sizeMask ); // resize all 'visible' masks
  }

  /**
   * @param {string}  pane    The pane being resized, animated or isSliding
   * @param {Object=} [args]    (optional) Options: which masks to apply, and to which panes
   */
, showMasks = function (pane, args) {
    var c   = _c[pane]
    , panes =  ["center"]
    , z   = options.zIndexes
    , a   = $.extend({
            objectsOnly:  false
          , animation:    false
          , resizing:   true
          , sliding:    state[pane].isSliding
          },  args )
    , o, s
    ;
    if (a.resizing)
      panes.push( pane );
    if (a.sliding)
      panes.push( _c.oppositeEdge[pane] ); // ADD the oppositeEdge-pane

    if (c.dir === "horz") {
      panes.push("west");
      panes.push("east");
    }

    $.each(panes, function(i,p){
      s = state[p];
      o = options[p];
      if (s.isVisible && ( o.maskObjects || (!a.objectsOnly && o.maskContents) )) {
        getMasks(p).each(function(){
          sizeMask.call(this);
          this.style.zIndex = s.isSliding ? z.pane_sliding+1 : z.pane_normal+1
          this.style.display = "block";
        });
      }
    });
  }

  /**
   * @param {boolean=}  force   Hide masks even if a pane is sliding
   */
, hideMasks = function (force) {
    // ensure no pane is resizing - could be a timing issue
    if (force || !state.paneResizing) {
      $Ms.hide(); // hide ALL masks
    }
    // if ANY pane is sliding, then DO NOT remove masks from panes with maskObjects enabled
    else if (!force && !$.isEmptyObject( state.panesSliding )) {
      var i = $Ms.length - 1
      , p, $M;
      for (; i >= 0; i--) {
        $M  = $Ms.eq(i);
        p = $M.data("layoutMask");
        if (!options[p].maskObjects) {
          $M.hide();
        }
      }
    }
  }

  /**
   * @param {string}  pane
   */
, getMasks = function (pane) {
    var $Masks  = $([])
    , $M, i = 0, c = $Ms.length
    ;
    for (; i<c; i++) {
      $M = $Ms.eq(i);
      if ($M.data("layoutMask") === pane)
        $Masks = $Masks.add( $M );
    }
    if ($Masks.length)
      return $Masks;
    else
      return createMasks(pane);
  }

  /**
   * createMasks
   *
   * Generates both DIV (ALWAYS used) and IFRAME (optional) elements as masks
   * An IFRAME mask is created *under* the DIV when maskObjects=true, because a DIV cannot mask an applet
   *
   * @param {string}  pane
   */
, createMasks = function (pane) {
    var
      $P  = $Ps[pane]
    , s = state[pane]
    , o = options[pane]
    , z = options.zIndexes
    , isIframe, el, $M, css, i
    ;
    if (!o.maskContents && !o.maskObjects) return $([]);
    // if o.maskObjects=true, then loop TWICE to create BOTH kinds of mask, else only create a DIV
    for (i=0; i < (o.maskObjects ? 2 : 1); i++) {
      isIframe = o.maskObjects && i==0;
      el = document.createElement( isIframe ? "iframe" : "div" );
      $M = $(el).data("layoutMask", pane); // add data to relate mask to pane
      el.className = "ui-layout-mask ui-layout-mask-"+ pane; // for user styling
      css = el.style;
      // Both DIVs and IFRAMES
      css.background  = "#FFF";
      css.position  = "absolute";
      css.display   = "block";
      if (isIframe) { // IFRAME-only props
        el.src    = "about:blank";
        el.frameborder = 0;
        css.border  = 0;
        css.opacity = 0;
        css.filter  = "Alpha(Opacity='0')";
        //el.allowTransparency = true; - for IE, but breaks masking ability!
      }
      else { // DIV-only props
        css.opacity = 0.001;
        css.filter  = "Alpha(Opacity='1')";
      }
      // if pane IS an IFRAME, then must mask the pane itself
      if (s.tagName == "IFRAME") {
        // NOTE sizing done by a subroutine so can be called during live-resizing
        css.zIndex  = z.pane_normal+1; // 1-higher than pane
        $N.append( el ); // append to LAYOUT CONTAINER
      }
      // otherwise put masks *inside the pane* to mask its contents
      else {
        $M.addClass("ui-layout-mask-inside-pane");
        css.zIndex  = o.maskZindex || z.content_mask; // usually 1, but customizable
        css.top   = 0;
        css.left  = 0;
        css.width = "100%";
        css.height  = "100%";
        $P.append( el ); // append INSIDE pane element
      }
      // add Mask to cached array so can be resized & reused
      $Ms = $Ms.add( el );
    }
    return $Ms;
  }


  /**
   * Destroy this layout and reset all elements
   *
   * @param {boolean=}  [destroyChildren=false]   Destory Child-Layouts first?
   */
, destroy = function (evt_or_destroyChildren, destroyChildren) {
    // UNBIND layout events and remove global object
    $(window).unbind("."+ sID);   // resize & unload
    $(document).unbind("."+ sID); // keyDown (hotkeys)

    if (typeof evt_or_destroyChildren === "object")
      // stopPropagation if called by trigger("layoutdestroy") - use evtPane utility 
      evtPane(evt_or_destroyChildren);
    else // no event, so transfer 1st param to destroyChildren param
      destroyChildren = evt_or_destroyChildren;

    // need to look for parent layout BEFORE we remove the container data, else skips a level
    //var parentPane = Instance.hasParentLayout ? $.layout.getParentPaneInstance( $N ) : null;

    // reset layout-container
    $N  .clearQueue()
      .removeData("layout")
      .removeData("layoutContainer")
      .removeClass(options.containerClass)
      .unbind("."+ sID) // remove ALL Layout events
    ;

    // remove all mask elements that have been created
    $Ms.remove();

    // loop all panes to remove layout classes, attributes and bindings
    $.each(_c.allPanes, function (i, pane) {
      removePane( pane, false, true, destroyChildren ); // true = skipResize
    });

    // do NOT reset container CSS if is a 'pane' (or 'content') in an outer-layout - ie, THIS layout is 'nested'
    var css = "layoutCSS";
    if ($N.data(css) && !$N.data("layoutRole")) // RESET CSS
      $N.css( $N.data(css) ).removeData(css);

    // for full-page layouts, also reset the <HTML> CSS
    if (sC.tagName === "BODY" && ($N = $("html")).data(css)) // RESET <HTML> CSS
      $N.css( $N.data(css) ).removeData(css);

    // trigger plugins for this layout, if there are any
    runPluginCallbacks( Instance, $.layout.onDestroy );

    // trigger state-management and onunload callback
    unload();

    // clear the Instance of everything except for container & options (so could recreate)
    // RE-CREATE: myLayout = myLayout.container.layout( myLayout.options );
    for (var n in Instance)
      if (!n.match(/^(container|options)$/)) delete Instance[ n ];
    // add a 'destroyed' flag to make it easy to check
    Instance.destroyed = true;

    // if this is a child layout, CLEAR the child-pointer in the parent
    /* for now the pointer REMAINS, but with only container, options and destroyed keys
    if (parentPane) {
      var layout  = parentPane.pane.data("parentLayout")
      , key   = layout.options.instanceKey || 'error';
      // THIS SYNTAX MAY BE WRONG!
      parentPane.children[key] = layout.children[ parentPane.name ].children[key] = null;
    }
    */

    return Instance; // for coding convenience
  }

  /**
   * Remove a pane from the layout - subroutine of destroy()
   *
   * @see  destroy()
   * @param {(string|Object)} evt_or_pane     The pane to process
   * @param {boolean=}      [remove=false]    Remove the DOM element?
   * @param {boolean=}      [skipResize=false]  Skip calling resizeAll()?
   * @param {boolean=}      [destroyChild=true] Destroy Child-layouts? If not passed, obeys options setting
   */
, removePane = function (evt_or_pane, remove, skipResize, destroyChild) {
    if (!isInitialized()) return;
    var pane = evtPane.call(this, evt_or_pane)
    , $P  = $Ps[pane]
    , $C  = $Cs[pane]
    , $R  = $Rs[pane]
    , $T  = $Ts[pane]
    ;
    // NOTE: elements can still exist even after remove()
    //    so check for missing data(), which is cleared by removed()
    if ($P && $.isEmptyObject( $P.data() )) $P = false;
    if ($C && $.isEmptyObject( $C.data() )) $C = false;
    if ($R && $.isEmptyObject( $R.data() )) $R = false;
    if ($T && $.isEmptyObject( $T.data() )) $T = false;

    if ($P) $P.stop(true, true);

    var o = options[pane]
    , s = state[pane]
    , d = "layout"
    , css = "layoutCSS"
    , pC  = children[pane]
    , hasChildren = $.isPlainObject( pC ) && !$.isEmptyObject( pC )
    , destroy   = destroyChild !== undefined ? destroyChild : o.destroyChildren
    ;
    // FIRST destroy the child-layout(s)
    if (hasChildren && destroy) {
      $.each( pC, function (key, child) {
        if (!child.destroyed)
          child.destroy(true);// tell child-layout to destroy ALL its child-layouts too
        if (child.destroyed)  // destroy was successful
          delete pC[key];
      });
      // if no more children, remove the children hash
      if ($.isEmptyObject( pC )) {
        pC = children[pane] = null; // clear children hash
        hasChildren = false;
      }
    }

    // Note: can't 'remove' a pane element with non-destroyed children
    if ($P && remove && !hasChildren)
      $P.remove(); // remove the pane-element and everything inside it
    else if ($P && $P[0]) {
      //  create list of ALL pane-classes that need to be removed
      var root  = o.paneClass // default="ui-layout-pane"
      , pRoot = root +"-"+ pane // eg: "ui-layout-pane-west"
      , _open = "-open"
      , _sliding= "-sliding"
      , _closed = "-closed"
      , classes = [ root, root+_open, root+_closed, root+_sliding,    // generic classes
              pRoot, pRoot+_open, pRoot+_closed, pRoot+_sliding ] // pane-specific classes
      ;
      $.merge(classes, getHoverClasses($P, true)); // ADD hover-classes
      // remove all Layout classes from pane-element
      $P  .removeClass( classes.join(" ") ) // remove ALL pane-classes
        .removeData("parentLayout")
        .removeData("layoutPane")
        .removeData("layoutRole")
        .removeData("layoutEdge")
        .removeData("autoHidden") // in case set
        .unbind("."+ sID) // remove ALL Layout events
        // TODO: remove these extra unbind commands when jQuery is fixed
        //.unbind("mouseenter"+ sID)
        //.unbind("mouseleave"+ sID)
      ;
      // do NOT reset CSS if this pane/content is STILL the container of a nested layout!
      // the nested layout will reset its 'container' CSS when/if it is destroyed
      if (hasChildren && $C) {
        // a content-div may not have a specific width, so give it one to contain the Layout
        $C.width( $C.width() );
        $.each( pC, function (key, child) {
          child.resizeAll(); // resize the Layout
        });
      }
      else if ($C)
        $C.css( $C.data(css) ).removeData(css).removeData("layoutRole");
      // remove pane AFTER content in case there was a nested layout
      if (!$P.data(d))
        $P.css( $P.data(css) ).removeData(css);
    }

    // REMOVE pane resizer and toggler elements
    if ($T) $T.remove();
    if ($R) $R.remove();

    // CLEAR all pointers and state data
    Instance[pane] = $Ps[pane] = $Cs[pane] = $Rs[pane] = $Ts[pane] = false;
    s = { removed: true };

    if (!skipResize)
      resizeAll();
  }


/*
 * ###########################
 *     ACTION METHODS
 * ###########################
 */

  /**
   * @param {string}  pane
   */
, _hidePane = function (pane) {
    var $P  = $Ps[pane]
    , o = options[pane]
    , s = $P[0].style
    ;
    if (o.useOffscreenClose) {
      if (!$P.data(_c.offscreenReset))
        $P.data(_c.offscreenReset, { left: s.left, right: s.right });
      $P.css( _c.offscreenCSS );
    }
    else
      $P.hide().removeData(_c.offscreenReset);
  }

  /**
   * @param {string}  pane
   */
, _showPane = function (pane) {
    var $P  = $Ps[pane]
    , o = options[pane]
    , off = _c.offscreenCSS
    , old = $P.data(_c.offscreenReset)
    , s = $P[0].style
    ;
    $P  .show() // ALWAYS show, just in case
      .removeData(_c.offscreenReset);
    if (o.useOffscreenClose && old) {
      if (s.left == off.left)
        s.left = old.left;
      if (s.right == off.right)
        s.right = old.right;
    }
  }


  /**
   * Completely 'hides' a pane, including its spacing - as if it does not exist
   * The pane is not actually 'removed' from the source, so can use 'show' to un-hide it
   *
   * @param {(string|Object)} evt_or_pane     The pane being hidden, ie: north, south, east, or west
   * @param {boolean=}      [noAnimation=false] 
   */
, hide = function (evt_or_pane, noAnimation) {
    if (!isInitialized()) return;
    var pane = evtPane.call(this, evt_or_pane)
    , o = options[pane]
    , s = state[pane]
    , $P  = $Ps[pane]
    , $R  = $Rs[pane]
    ;
    if (pane === "center" || !$P || s.isHidden) return; // pane does not exist OR is already hidden

    // onhide_start callback - will CANCEL hide if returns false
    if (state.initialized && false === _runCallbacks("onhide_start", pane)) return;

    s.isSliding = false; // just in case
    delete state.panesSliding[pane];

    // now hide the elements
    if ($R) $R.hide(); // hide resizer-bar
    if (!state.initialized || s.isClosed) {
      s.isClosed = true; // to trigger open-animation on show()
      s.isHidden  = true;
      s.isVisible = false;
      if (!state.initialized)
        _hidePane(pane); // no animation when loading page
      sizeMidPanes(_c[pane].dir === "horz" ? "" : "center");
      if (state.initialized || o.triggerEventsOnLoad)
        _runCallbacks("onhide_end", pane);
    }
    else {
      s.isHiding = true; // used by onclose
      close(pane, false, noAnimation); // adjust all panes to fit
    }
  }

  /**
   * Show a hidden pane - show as 'closed' by default unless openPane = true
   *
   * @param {(string|Object)} evt_or_pane     The pane being opened, ie: north, south, east, or west
   * @param {boolean=}      [openPane=false]
   * @param {boolean=}      [noAnimation=false]
   * @param {boolean=}      [noAlert=false]
   */
, show = function (evt_or_pane, openPane, noAnimation, noAlert) {
    if (!isInitialized()) return;
    var pane = evtPane.call(this, evt_or_pane)
    , o = options[pane]
    , s = state[pane]
    , $P  = $Ps[pane]
    , $R  = $Rs[pane]
    ;
    if (pane === "center" || !$P || !s.isHidden) return; // pane does not exist OR is not hidden

    // onshow_start callback - will CANCEL show if returns false
    if (false === _runCallbacks("onshow_start", pane)) return;

    s.isShowing = true; // used by onopen/onclose
    //s.isHidden  = false; - will be set by open/close - if not cancelled
    s.isSliding = false; // just in case
    delete state.panesSliding[pane];

    // now show the elements
    //if ($R) $R.show(); - will be shown by open/close
    if (openPane === false)
      close(pane, true); // true = force
    else
      open(pane, false, noAnimation, noAlert); // adjust all panes to fit
  }


  /**
   * Toggles a pane open/closed by calling either open or close
   *
   * @param {(string|Object)} evt_or_pane   The pane being toggled, ie: north, south, east, or west
   * @param {boolean=}      [slide=false]
   */
, toggle = function (evt_or_pane, slide) {
    if (!isInitialized()) return;
    var evt   = evtObj(evt_or_pane)
    , pane  = evtPane.call(this, evt_or_pane)
    , s   = state[pane]
    ;
    if (evt) // called from to $R.dblclick OR triggerPaneEvent
      evt.stopImmediatePropagation();
    if (s.isHidden)
      show(pane); // will call 'open' after unhiding it
    else if (s.isClosed)
      open(pane, !!slide);
    else
      close(pane);
  }


  /**
   * Utility method used during init or other auto-processes
   *
   * @param {string}  pane   The pane being closed
   * @param {boolean=}  [setHandles=false]
   */
, _closePane = function (pane, setHandles) {
    var
      $P  = $Ps[pane]
    , s = state[pane]
    ;
    _hidePane(pane);
    s.isClosed = true;
    s.isVisible = false;
    if (setHandles) setAsClosed(pane);
  }

  /**
   * Close the specified pane (animation optional), and resize all other panes as needed
   *
   * @param {(string|Object)} evt_or_pane     The pane being closed, ie: north, south, east, or west
   * @param {boolean=}      [force=false]
   * @param {boolean=}      [noAnimation=false]
   * @param {boolean=}      [skipCallback=false]
   */
, close = function (evt_or_pane, force, noAnimation, skipCallback) {
    var pane = evtPane.call(this, evt_or_pane);
    if (pane === "center") return; // validate
    // if pane has been initialized, but NOT the complete layout, close pane instantly
    if (!state.initialized && $Ps[pane]) {
      _closePane(pane, true); // INIT pane as closed
      return;
    }
    if (!isInitialized()) return;

    var
      $P  = $Ps[pane]
    , $R  = $Rs[pane]
    , $T  = $Ts[pane]
    , o = options[pane]
    , s = state[pane]
    , c = _c[pane]
    , doFX, isShowing, isHiding, wasSliding;

    // QUEUE in case another action/animation is in progress
    $N.queue(function( queueNext ){

      if ( !$P
      ||  (!o.closable && !s.isShowing && !s.isHiding)  // invalid request // (!o.resizable && !o.closable) ???
      ||  (!force && s.isClosed && !s.isShowing)      // already closed
      ) return queueNext();

      // onclose_start callback - will CANCEL hide if returns false
      // SKIP if just 'showing' a hidden pane as 'closed'
      var abort = !s.isShowing && false === _runCallbacks("onclose_start", pane);

      // transfer logic vars to temp vars
      isShowing = s.isShowing;
      isHiding  = s.isHiding;
      wasSliding  = s.isSliding;
      // now clear the logic vars (REQUIRED before aborting)
      delete s.isShowing;
      delete s.isHiding;

      if (abort) return queueNext();

      doFX    = !noAnimation && !s.isClosed && (o.fxName_close != "none");
      s.isMoving  = true;
      s.isClosed  = true;
      s.isVisible = false;
      // update isHidden BEFORE sizing panes
      if (isHiding) s.isHidden = true;
      else if (isShowing) s.isHidden = false;

      if (s.isSliding) // pane is being closed, so UNBIND trigger events
        bindStopSlidingEvents(pane, false); // will set isSliding=false
      else // resize panes adjacent to this one
        sizeMidPanes(_c[pane].dir === "horz" ? "" : "center", false); // false = NOT skipCallback

      // if this pane has a resizer bar, move it NOW - before animation
      setAsClosed(pane);

      // CLOSE THE PANE
      if (doFX) { // animate the close
        lockPaneForFX(pane, true);  // need to set left/top so animation will work
        $P.hide( o.fxName_close, o.fxSettings_close, o.fxSpeed_close, function () {
          lockPaneForFX(pane, false); // undo
          if (s.isClosed) close_2();
          queueNext();
        });
      }
      else { // hide the pane without animation
        _hidePane(pane);
        close_2();
        queueNext();
      };
    });

    // SUBROUTINE
    function close_2 () {
      s.isMoving  = false;
      bindStartSlidingEvents(pane, true); // will enable if o.slidable = true

      // if opposite-pane was autoClosed, see if it can be autoOpened now
      var altPane = _c.oppositeEdge[pane];
      if (state[ altPane ].noRoom) {
        setSizeLimits( altPane );
        makePaneFit( altPane );
      }

      if (!skipCallback && (state.initialized || o.triggerEventsOnLoad)) {
        // onclose callback - UNLESS just 'showing' a hidden pane as 'closed'
        if (!isShowing) _runCallbacks("onclose_end", pane);
        // onhide OR onshow callback
        if (isShowing)  _runCallbacks("onshow_end", pane);
        if (isHiding) _runCallbacks("onhide_end", pane);
      }
    }
  }

  /**
   * @param {string}  pane  The pane just closed, ie: north, south, east, or west
   */
, setAsClosed = function (pane) {
    if (!$Rs[pane]) return; // handles not initialized yet!
    var
      $P    = $Ps[pane]
    , $R    = $Rs[pane]
    , $T    = $Ts[pane]
    , o   = options[pane]
    , s   = state[pane]
    , side  = _c[pane].side
    , rClass  = o.resizerClass
    , tClass  = o.togglerClass
    , _pane = "-"+ pane // used for classNames
    , _open = "-open"
    , _sliding= "-sliding"
    , _closed = "-closed"
    ;
    $R
      .css(side, sC.inset[side]) // move the resizer
      .removeClass( rClass+_open +" "+ rClass+_pane+_open )
      .removeClass( rClass+_sliding +" "+ rClass+_pane+_sliding )
      .addClass( rClass+_closed +" "+ rClass+_pane+_closed )
    ;
    // handle already-hidden panes in case called by swap() or a similar method 
    if (s.isHidden) $R.hide(); // hide resizer-bar 

    // DISABLE 'resizing' when closed - do this BEFORE bindStartSlidingEvents?
    if (o.resizable && $.layout.plugins.draggable)
      $R
        .draggable("disable")
        .removeClass("ui-state-disabled") // do NOT apply disabled styling - not suitable here
        .css("cursor", "default")
        .attr("title","")
      ;

    // if pane has a toggler button, adjust that too
    if ($T) {
      $T
        .removeClass( tClass+_open +" "+ tClass+_pane+_open )
        .addClass( tClass+_closed +" "+ tClass+_pane+_closed )
        .attr("title", o.tips.Open) // may be blank
      ;
      // toggler-content - if exists
      $T.children(".content-open").hide();
      $T.children(".content-closed").css("display","block");
    }

    // sync any 'pin buttons'
    syncPinBtns(pane, false);

    if (state.initialized) {
      // resize 'length' and position togglers for adjacent panes
      sizeHandles();
    }
  }

  /**
   * Open the specified pane (animation optional), and resize all other panes as needed
   *
   * @param {(string|Object)} evt_or_pane     The pane being opened, ie: north, south, east, or west
   * @param {boolean=}      [slide=false]
   * @param {boolean=}      [noAnimation=false]
   * @param {boolean=}      [noAlert=false]
   */
, open = function (evt_or_pane, slide, noAnimation, noAlert) {
    if (!isInitialized()) return;
    var pane = evtPane.call(this, evt_or_pane)
    , $P  = $Ps[pane]
    , $R  = $Rs[pane]
    , $T  = $Ts[pane]
    , o = options[pane]
    , s = state[pane]
    , c = _c[pane]
    , doFX, isShowing
    ;
    if (pane === "center") return; // validate
    // QUEUE in case another action/animation is in progress
    $N.queue(function( queueNext ){

      if ( !$P
      ||  (!o.resizable && !o.closable && !s.isShowing) // invalid request
      ||  (s.isVisible && !s.isSliding)         // already open
      ) return queueNext();

      // pane can ALSO be unhidden by just calling show(), so handle this scenario
      if (s.isHidden && !s.isShowing) {
        queueNext(); // call before show() because it needs the queue free
        show(pane, true);
        return;
      }

      if (s.autoResize && s.size != o.size) // resize pane to original size set in options
        sizePane(pane, o.size, true, true, true); // true=skipCallback/noAnimation/forceResize
      else
        // make sure there is enough space available to open the pane
        setSizeLimits(pane, slide);

      // onopen_start callback - will CANCEL open if returns false
      var cbReturn = _runCallbacks("onopen_start", pane);

      if (cbReturn === "abort")
        return queueNext();

      // update pane-state again in case options were changed in onopen_start
      if (cbReturn !== "NC") // NC = "No Callback"
        setSizeLimits(pane, slide);

      if (s.minSize > s.maxSize) { // INSUFFICIENT ROOM FOR PANE TO OPEN!
        syncPinBtns(pane, false); // make sure pin-buttons are reset
        if (!noAlert && o.tips.noRoomToOpen)
          alert(o.tips.noRoomToOpen);
        return queueNext(); // ABORT
      }

      if (slide) // START Sliding - will set isSliding=true
        bindStopSlidingEvents(pane, true); // BIND trigger events to close sliding-pane
      else if (s.isSliding) // PIN PANE (stop sliding) - open pane 'normally' instead
        bindStopSlidingEvents(pane, false); // UNBIND trigger events - will set isSliding=false
      else if (o.slidable)
        bindStartSlidingEvents(pane, false); // UNBIND trigger events

      s.noRoom = false; // will be reset by makePaneFit if 'noRoom'
      makePaneFit(pane);

      // transfer logic var to temp var
      isShowing = s.isShowing;
      // now clear the logic var
      delete s.isShowing;

      doFX    = !noAnimation && s.isClosed && (o.fxName_open != "none");
      s.isMoving  = true;
      s.isVisible = true;
      s.isClosed  = false;
      // update isHidden BEFORE sizing panes - WHY??? Old?
      if (isShowing) s.isHidden = false;

      if (doFX) { // ANIMATE
        // mask adjacent panes with objects
        lockPaneForFX(pane, true);  // need to set left/top so animation will work
          $P.show( o.fxName_open, o.fxSettings_open, o.fxSpeed_open, function() {
          lockPaneForFX(pane, false); // undo
          if (s.isVisible) open_2(); // continue
          queueNext();
        });
      }
      else { // no animation
        _showPane(pane);// just show pane and...
        open_2();   // continue
        queueNext();
      };
    });

    // SUBROUTINE
    function open_2 () {
      s.isMoving  = false;

      // cure iframe display issues
      _fixIframe(pane);

      // NOTE: if isSliding, then other panes are NOT 'resized'
      if (!s.isSliding) { // resize all panes adjacent to this one
        sizeMidPanes(_c[pane].dir=="vert" ? "center" : "", false); // false = NOT skipCallback
      }

      // set classes, position handles and execute callbacks...
      setAsOpen(pane);
    };
  
  }

  /**
   * @param {string}  pane    The pane just opened, ie: north, south, east, or west
   * @param {boolean=}  [skipCallback=false]
   */
, setAsOpen = function (pane, skipCallback) {
    var 
      $P    = $Ps[pane]
    , $R    = $Rs[pane]
    , $T    = $Ts[pane]
    , o   = options[pane]
    , s   = state[pane]
    , side  = _c[pane].side
    , rClass  = o.resizerClass
    , tClass  = o.togglerClass
    , _pane = "-"+ pane // used for classNames
    , _open = "-open"
    , _closed = "-closed"
    , _sliding= "-sliding"
    ;
    $R
      .css(side, sC.inset[side] + getPaneSize(pane)) // move the resizer
      .removeClass( rClass+_closed +" "+ rClass+_pane+_closed )
      .addClass( rClass+_open +" "+ rClass+_pane+_open )
    ;
    if (s.isSliding)
      $R.addClass( rClass+_sliding +" "+ rClass+_pane+_sliding )
    else // in case 'was sliding'
      $R.removeClass( rClass+_sliding +" "+ rClass+_pane+_sliding )

    removeHover( 0, $R ); // remove hover classes
    if (o.resizable && $.layout.plugins.draggable)
      $R  .draggable("enable")
        .css("cursor", o.resizerCursor)
        .attr("title", o.tips.Resize);
    else if (!s.isSliding)
      $R.css("cursor", "default"); // n-resize, s-resize, etc

    // if pane also has a toggler button, adjust that too
    if ($T) {
      $T  .removeClass( tClass+_closed +" "+ tClass+_pane+_closed )
        .addClass( tClass+_open +" "+ tClass+_pane+_open )
        .attr("title", o.tips.Close); // may be blank
      removeHover( 0, $T ); // remove hover classes
      // toggler-content - if exists
      $T.children(".content-closed").hide();
      $T.children(".content-open").css("display","block");
    }

    // sync any 'pin buttons'
    syncPinBtns(pane, !s.isSliding);

    // update pane-state dimensions - BEFORE resizing content
    $.extend(s, elDims($P));

    if (state.initialized) {
      // resize resizer & toggler sizes for all panes
      sizeHandles();
      // resize content every time pane opens - to be sure
      sizeContent(pane, true); // true = remeasure headers/footers, even if 'pane.isMoving'
    }

    if (!skipCallback && (state.initialized || o.triggerEventsOnLoad) && $P.is(":visible")) {
      // onopen callback
      _runCallbacks("onopen_end", pane);
      // onshow callback - TODO: should this be here?
      if (s.isShowing) _runCallbacks("onshow_end", pane);

      // ALSO call onresize because layout-size *may* have changed while pane was closed
      if (state.initialized)
        _runCallbacks("onresize_end", pane);
    }

    // TODO: Somehow sizePane("north") is being called after this point???
  }


  /**
   * slideOpen / slideClose / slideToggle
   *
   * Pass-though methods for sliding
   */
, slideOpen = function (evt_or_pane) {
    if (!isInitialized()) return;
    var evt   = evtObj(evt_or_pane)
    , pane  = evtPane.call(this, evt_or_pane)
    , s   = state[pane]
    , delay = options[pane].slideDelay_open
    ;
    if (pane === "center") return; // validate
    // prevent event from triggering on NEW resizer binding created below
    if (evt) evt.stopImmediatePropagation();

    if (s.isClosed && evt && evt.type === "mouseenter" && delay > 0)
      // trigger = mouseenter - use a delay
      timer.set(pane+"_openSlider", open_NOW, delay);
    else
      open_NOW(); // will unbind events if is already open

    /**
     * SUBROUTINE for timed open
     */
    function open_NOW () {
      if (!s.isClosed) // skip if no longer closed!
        bindStopSlidingEvents(pane, true); // BIND trigger events to close sliding-pane
      else if (!s.isMoving)
        open(pane, true); // true = slide - open() will handle binding
    };
  }

, slideClose = function (evt_or_pane) {
    if (!isInitialized()) return;
    var evt   = evtObj(evt_or_pane)
    , pane  = evtPane.call(this, evt_or_pane)
    , o   = options[pane]
    , s   = state[pane]
    , delay = s.isMoving ? 1000 : 300 // MINIMUM delay - option may override
    ;
    if (pane === "center") return; // validate
    if (s.isClosed || s.isResizing)
      return; // skip if already closed OR in process of resizing
    else if (o.slideTrigger_close === "click")
      close_NOW(); // close immediately onClick
    else if (o.preventQuickSlideClose && s.isMoving)
      return; // handle Chrome quick-close on slide-open
    else if (o.preventPrematureSlideClose && evt && $.layout.isMouseOverElem(evt, $Ps[pane]))
      return; // handle incorrect mouseleave trigger, like when over a SELECT-list in IE
    else if (evt) // trigger = mouseleave - use a delay
      // 1 sec delay if 'opening', else .3 sec
      timer.set(pane+"_closeSlider", close_NOW, max(o.slideDelay_close, delay));
    else // called programically
      close_NOW();

    /**
     * SUBROUTINE for timed close
     */
    function close_NOW () {
      if (s.isClosed) // skip 'close' if already closed!
        bindStopSlidingEvents(pane, false); // UNBIND trigger events - TODO: is this needed here?
      else if (!s.isMoving)
        close(pane); // close will handle unbinding
    };
  }

  /**
   * @param {(string|Object)} evt_or_pane   The pane being opened, ie: north, south, east, or west
   */
, slideToggle = function (evt_or_pane) {
    var pane = evtPane.call(this, evt_or_pane);
    toggle(pane, true);
  }


  /**
   * Must set left/top on East/South panes so animation will work properly
   *
   * @param {string}  pane  The pane to lock, 'east' or 'south' - any other is ignored!
   * @param {boolean} doLock  true = set left/top, false = remove
   */
, lockPaneForFX = function (pane, doLock) {
    var $P  = $Ps[pane]
    , s = state[pane]
    , o = options[pane]
    , z = options.zIndexes
    ;
    if (doLock) {
      showMasks( pane, { animation: true, objectsOnly: true });
      $P.css({ zIndex: z.pane_animate }); // overlay all elements during animation
      if (pane=="south")
        $P.css({ top: sC.inset.top + sC.innerHeight - $P.outerHeight() });
      else if (pane=="east")
        $P.css({ left: sC.inset.left + sC.innerWidth - $P.outerWidth() });
    }
    else { // animation DONE - RESET CSS
      hideMasks();
      $P.css({ zIndex: (s.isSliding ? z.pane_sliding : z.pane_normal) });
      if (pane=="south")
        $P.css({ top: "auto" });
      // if pane is positioned 'off-screen', then DO NOT screw with it!
      else if (pane=="east" && !$P.css("left").match(/\-99999/))
        $P.css({ left: "auto" });
      // fix anti-aliasing in IE - only needed for animations that change opacity
      if (browser.msie && o.fxOpacityFix && o.fxName_open != "slide" && $P.css("filter") && $P.css("opacity") == 1)
        $P[0].style.removeAttribute('filter');
    }
  }


  /**
   * Toggle sliding functionality of a specific pane on/off by adding removing 'slide open' trigger
   *
   * @see  open(), close()
   * @param {string}  pane  The pane to enable/disable, 'north', 'south', etc.
   * @param {boolean} enable  Enable or Disable sliding?
   */
, bindStartSlidingEvents = function (pane, enable) {
    var o   = options[pane]
    , $P    = $Ps[pane]
    , $R    = $Rs[pane]
    , evtName = o.slideTrigger_open.toLowerCase()
    ;
    if (!$R || (enable && !o.slidable)) return;

    // make sure we have a valid event
    if (evtName.match(/mouseover/))
      evtName = o.slideTrigger_open = "mouseenter";
    else if (!evtName.match(/(click|dblclick|mouseenter)/)) 
      evtName = o.slideTrigger_open = "click";

    // must remove double-click-toggle when using dblclick-slide
    if (o.resizerDblClickToggle && evtName.match(/click/)) {
      $R[enable ? "unbind" : "bind"]('dblclick.'+ sID, toggle)
    }

    $R
      // add or remove event
      [enable ? "bind" : "unbind"](evtName +'.'+ sID, slideOpen)
      // set the appropriate cursor & title/tip
      .css("cursor", enable ? o.sliderCursor : "default")
      .attr("title", enable ? o.tips.Slide : "")
    ;
  }

  /**
   * Add or remove 'mouseleave' events to 'slide close' when pane is 'sliding' open or closed
   * Also increases zIndex when pane is sliding open
   * See bindStartSlidingEvents for code to control 'slide open'
   *
   * @see  slideOpen(), slideClose()
   * @param {string}  pane  The pane to process, 'north', 'south', etc.
   * @param {boolean} enable  Enable or Disable events?
   */
, bindStopSlidingEvents = function (pane, enable) {
    var o   = options[pane]
    , s   = state[pane]
    , c   = _c[pane]
    , z   = options.zIndexes
    , evtName = o.slideTrigger_close.toLowerCase()
    , action  = (enable ? "bind" : "unbind")
    , $P    = $Ps[pane]
    , $R    = $Rs[pane]
    ;
    timer.clear(pane+"_closeSlider"); // just in case

    if (enable) {
      s.isSliding = true;
      state.panesSliding[pane] = true;
      // remove 'slideOpen' event from resizer
      // ALSO will raise the zIndex of the pane & resizer
      bindStartSlidingEvents(pane, false);
    }
    else {
      s.isSliding = false;
      delete state.panesSliding[pane];
    }

    // RE/SET zIndex - increases when pane is sliding-open, resets to normal when not
    $P.css("zIndex", enable ? z.pane_sliding : z.pane_normal);
    $R.css("zIndex", enable ? z.pane_sliding+2 : z.resizer_normal); // NOTE: mask = pane_sliding+1

    // make sure we have a valid event
    if (!evtName.match(/(click|mouseleave)/))
      evtName = o.slideTrigger_close = "mouseleave"; // also catches 'mouseout'

    // add/remove slide triggers
    $R[action](evtName, slideClose); // base event on resize
    // need extra events for mouseleave
    if (evtName === "mouseleave") {
      // also close on pane.mouseleave
      $P[action]("mouseleave."+ sID, slideClose);
      // cancel timer when mouse moves between 'pane' and 'resizer'
      $R[action]("mouseenter."+ sID, cancelMouseOut);
      $P[action]("mouseenter."+ sID, cancelMouseOut);
    }

    if (!enable)
      timer.clear(pane+"_closeSlider");
    else if (evtName === "click" && !o.resizable) {
      // IF pane is not resizable (which already has a cursor and tip) 
      // then set the a cursor & title/tip on resizer when sliding
      $R.css("cursor", enable ? o.sliderCursor : "default");
      $R.attr("title", enable ? o.tips.Close : ""); // use Toggler-tip, eg: "Close Pane"
    }

    // SUBROUTINE for mouseleave timer clearing
    function cancelMouseOut (evt) {
      timer.clear(pane+"_closeSlider");
      evt.stopPropagation();
    }
  }


  /**
   * Hides/closes a pane if there is insufficient room - reverses this when there is room again
   * MUST have already called setSizeLimits() before calling this method
   *
   * @param {string}  pane          The pane being resized
   * @param {boolean=}  [isOpening=false]   Called from onOpen?
   * @param {boolean=}  [skipCallback=false]  Should the onresize callback be run?
   * @param {boolean=}  [force=false]
   */
, makePaneFit = function (pane, isOpening, skipCallback, force) {
    var o = options[pane]
    , s = state[pane]
    , c = _c[pane]
    , $P  = $Ps[pane]
    , $R  = $Rs[pane]
    , isSidePane  = c.dir==="vert"
    , hasRoom   = false
    ;
    // special handling for center & east/west panes
    if (pane === "center" || (isSidePane && s.noVerticalRoom)) {
      // see if there is enough room to display the pane
      // ERROR: hasRoom = s.minHeight <= s.maxHeight && (isSidePane || s.minWidth <= s.maxWidth);
      hasRoom = (s.maxHeight >= 0);
      if (hasRoom && s.noRoom) { // previously hidden due to noRoom, so show now
        _showPane(pane);
        if ($R) $R.show();
        s.isVisible = true;
        s.noRoom = false;
        if (isSidePane) s.noVerticalRoom = false;
        _fixIframe(pane);
      }
      else if (!hasRoom && !s.noRoom) { // not currently hidden, so hide now
        _hidePane(pane);
        if ($R) $R.hide();
        s.isVisible = false;
        s.noRoom = true;
      }
    }

    // see if there is enough room to fit the border-pane
    if (pane === "center") {
      // ignore center in this block
    }
    else if (s.minSize <= s.maxSize) { // pane CAN fit
      hasRoom = true;
      if (s.size > s.maxSize) // pane is too big - shrink it
        sizePane(pane, s.maxSize, skipCallback, true, force); // true = noAnimation
      else if (s.size < s.minSize) // pane is too small - enlarge it
        sizePane(pane, s.minSize, skipCallback, true, force); // true = noAnimation
      // need s.isVisible because new pseudoClose method keeps pane visible, but off-screen
      else if ($R && s.isVisible && $P.is(":visible")) {
        // make sure resizer-bar is positioned correctly
        // handles situation where nested layout was 'hidden' when initialized
        var pos = s.size + sC.inset[c.side];
        if ($.layout.cssNum( $R, c.side ) != pos) $R.css( c.side, pos );
      }

      // if was previously hidden due to noRoom, then RESET because NOW there is room
      if (s.noRoom) {
        // s.noRoom state will be set by open or show
        if (s.wasOpen && o.closable) {
          if (o.autoReopen)
            open(pane, false, true, true); // true = noAnimation, true = noAlert
          else // leave the pane closed, so just update state
            s.noRoom = false;
        }
        else
          show(pane, s.wasOpen, true, true); // true = noAnimation, true = noAlert
      }
    }
    else { // !hasRoom - pane CANNOT fit
      if (!s.noRoom) { // pane not set as noRoom yet, so hide or close it now...
        s.noRoom = true; // update state
        s.wasOpen = !s.isClosed && !s.isSliding;
        if (s.isClosed){} // SKIP
        else if (o.closable) // 'close' if possible
          close(pane, true, true); // true = force, true = noAnimation
        else // 'hide' pane if cannot just be closed
          hide(pane, true); // true = noAnimation
      }
    }
  }


  /**
   * manualSizePane is an exposed flow-through method allowing extra code when pane is 'manually resized'
   *
   * @param {(string|Object)} evt_or_pane       The pane being resized
   * @param {number}      size          The *desired* new size for this pane - will be validated
   * @param {boolean=}      [skipCallback=false]  Should the onresize callback be run?
   * @param {boolean=}      [noAnimation=false]
   * @param {boolean=}      [force=false]     Force resizing even if does not seem necessary
   */
, manualSizePane = function (evt_or_pane, size, skipCallback, noAnimation, force) {
    if (!isInitialized()) return;
    var pane = evtPane.call(this, evt_or_pane)
    , o = options[pane]
    , s = state[pane]
    //  if resizing callbacks have been delayed and resizing is now DONE, force resizing to complete...
    , forceResize = force || (o.livePaneResizing && !s.isResizing)
    ;
    if (pane === "center") return; // validate
    // ANY call to manualSizePane disables autoResize - ie, percentage sizing
    s.autoResize = false;
    // flow-through...
    sizePane(pane, size, skipCallback, noAnimation, forceResize); // will animate resize if option enabled
  }

  /**
   * sizePane is called only by internal methods whenever a pane needs to be resized
   *
   * @param {(string|Object)} evt_or_pane       The pane being resized
   * @param {number}      size          The *desired* new size for this pane - will be validated
   * @param {boolean=}      [skipCallback=false]  Should the onresize callback be run?
   * @param {boolean=}      [noAnimation=false]
   * @param {boolean=}      [force=false]     Force resizing even if does not seem necessary
   */
, sizePane = function (evt_or_pane, size, skipCallback, noAnimation, force) {
    if (!isInitialized()) return;
    var pane  = evtPane.call(this, evt_or_pane) // probably NEVER called from event?
    , o   = options[pane]
    , s   = state[pane]
    , $P    = $Ps[pane]
    , $R    = $Rs[pane]
    , side  = _c[pane].side
    , dimName = _c[pane].sizeType.toLowerCase()
    , skipResizeWhileDragging = s.isResizing && !o.triggerEventsDuringLiveResize
    , doFX  = noAnimation !== true && o.animatePaneSizing
    , oldSize, newSize
    ;
    if (pane === "center") return; // validate
    // QUEUE in case another action/animation is in progress
    $N.queue(function( queueNext ){
      // calculate 'current' min/max sizes
      setSizeLimits(pane); // update pane-state
      oldSize = s.size;
      size = _parseSize(pane, size); // handle percentages & auto
      size = max(size, _parseSize(pane, o.minSize));
      size = min(size, s.maxSize);
      if (size < s.minSize) { // not enough room for pane!
        queueNext(); // call before makePaneFit() because it needs the queue free
        makePaneFit(pane, false, skipCallback); // will hide or close pane
        return;
      }

      // IF newSize is same as oldSize, then nothing to do - abort
      if (!force && size === oldSize)
        return queueNext();

      s.newSize = size;

      // onresize_start callback CANNOT cancel resizing because this would break the layout!
      if (!skipCallback && state.initialized && s.isVisible)
        _runCallbacks("onresize_start", pane);

      // resize the pane, and make sure its visible
      newSize = cssSize(pane, size);

      if (doFX && $P.is(":visible")) { // ANIMATE
        var fx    = $.layout.effects.size[pane] || $.layout.effects.size.all
        , easing  = o.fxSettings_size.easing || fx.easing
        , z   = options.zIndexes
        , props = {};
        props[ dimName ] = newSize +'px';
        s.isMoving = true;
        // overlay all elements during animation
        $P.css({ zIndex: z.pane_animate })
          .show().animate( props, o.fxSpeed_size, easing, function(){
          // reset zIndex after animation
          $P.css({ zIndex: (s.isSliding ? z.pane_sliding : z.pane_normal) });
          s.isMoving = false;
          delete s.newSize;
          sizePane_2(); // continue
          queueNext();
        });
      }
      else { // no animation
        $P.css( dimName, newSize ); // resize pane
        delete s.newSize;
        // if pane is visible, then 
        if ($P.is(":visible"))
          sizePane_2(); // continue
        else {
          // pane is NOT VISIBLE, so just update state data...
          // when pane is *next opened*, it will have the new size
          s.size = size;        // update state.size
          //$.extend(s, elDims($P));  // update state dimensions - CANNOT do this when not visible!       }
        }
        queueNext();
      };

    });

    // SUBROUTINE
    function sizePane_2 () {
      /*  Panes are sometimes not sized precisely in some browsers!?
       *  This code will resize the pane up to 3 times to nudge the pane to the correct size
       */
      var actual  = dimName==='width' ? $P.outerWidth() : $P.outerHeight()
      , tries = [{
                pane:   pane
            , count:    1
            , target:   size
            , actual:   actual
            , correct:  (size === actual)
            , attempt:  size
            , cssSize:  newSize
            }]
      , lastTry = tries[0]
      , thisTry = {}
      , msg   = 'Inaccurate size after resizing the '+ pane +'-pane.'
      ;
      while ( !lastTry.correct ) {
        thisTry = { pane: pane, count: lastTry.count+1, target: size };

        if (lastTry.actual > size)
          thisTry.attempt = max(0, lastTry.attempt - (lastTry.actual - size));
        else // lastTry.actual < size
          thisTry.attempt = max(0, lastTry.attempt + (size - lastTry.actual));

        thisTry.cssSize = cssSize(pane, thisTry.attempt);
        $P.css( dimName, thisTry.cssSize );

        thisTry.actual  = dimName=='width' ? $P.outerWidth() : $P.outerHeight();
        thisTry.correct = (size === thisTry.actual);

        // log attempts and alert the user of this *non-fatal error* (if showDebugMessages)
        if ( tries.length === 1) {
          _log(msg, false, true);
          _log(lastTry, false, true);
        }
        _log(thisTry, false, true);
        // after 4 tries, is as close as its gonna get!
        if (tries.length > 3) break;

        tries.push( thisTry );
        lastTry = tries[ tries.length - 1 ];
      }
      // END TESTING CODE

      // update pane-state dimensions
      s.size  = size;
      $.extend(s, elDims($P));

      if (s.isVisible && $P.is(":visible")) {
        // reposition the resizer-bar
        if ($R) $R.css( side, size + sC.inset[side] );
        // resize the content-div
        sizeContent(pane);
      }

      if (!skipCallback && !skipResizeWhileDragging && state.initialized && s.isVisible)
        _runCallbacks("onresize_end", pane);

      // resize all the adjacent panes, and adjust their toggler buttons
      // when skipCallback passed, it means the controlling method will handle 'other panes'
      if (!skipCallback) {
        // also no callback if live-resize is in progress and NOT triggerEventsDuringLiveResize
        if (!s.isSliding) sizeMidPanes(_c[pane].dir=="horz" ? "" : "center", skipResizeWhileDragging, force);
        sizeHandles();
      }

      // if opposite-pane was autoClosed, see if it can be autoOpened now
      var altPane = _c.oppositeEdge[pane];
      if (size < oldSize && state[ altPane ].noRoom) {
        setSizeLimits( altPane );
        makePaneFit( altPane, false, skipCallback );
      }

      // DEBUG - ALERT user/developer so they know there was a sizing problem
      if (tries.length > 1)
        _log(msg +'\nSee the Error Console for details.', true, true);
    }
  }

  /**
   * @see  initPanes(), sizePane(),   resizeAll(), open(), close(), hide()
   * @param {(Array.<string>|string)} panes         The pane(s) being resized, comma-delmited string
   * @param {boolean=}          [skipCallback=false]  Should the onresize callback be run?
   * @param {boolean=}          [force=false]
   */
, sizeMidPanes = function (panes, skipCallback, force) {
    panes = (panes ? panes : "east,west,center").split(",");

    $.each(panes, function (i, pane) {
      if (!$Ps[pane]) return; // NO PANE - skip
      var 
        o   = options[pane]
      , s   = state[pane]
      , $P    = $Ps[pane]
      , $R    = $Rs[pane]
      , isCenter= (pane=="center")
      , hasRoom = true
      , CSS   = {}
      //  if pane is not visible, show it invisibly NOW rather than for *each call* in this script
      , visCSS  = $.layout.showInvisibly($P)

      , newCenter = calcNewCenterPaneDims()
      ;

      // update pane-state dimensions
      $.extend(s, elDims($P));

      if (pane === "center") {
        if (!force && s.isVisible && newCenter.width === s.outerWidth && newCenter.height === s.outerHeight) {
          $P.css(visCSS);
          return true; // SKIP - pane already the correct size
        }
        // set state for makePaneFit() logic
        $.extend(s, cssMinDims(pane), {
          maxWidth: newCenter.width
        , maxHeight:  newCenter.height
        });
        CSS = newCenter;
        s.newWidth  = CSS.width;
        s.newHeight = CSS.height;
        // convert OUTER width/height to CSS width/height 
        CSS.width = cssW($P, CSS.width);
        // NEW - allow pane to extend 'below' visible area rather than hide it
        CSS.height  = cssH($P, CSS.height);
        hasRoom   = CSS.width >= 0 && CSS.height >= 0; // height >= 0 = ALWAYS TRUE NOW

        // during layout init, try to shrink east/west panes to make room for center
        if (!state.initialized && o.minWidth > newCenter.width) {
          var
            reqPx = o.minWidth - s.outerWidth
          , minE  = options.east.minSize || 0
          , minW  = options.west.minSize || 0
          , sizeE = state.east.size
          , sizeW = state.west.size
          , newE  = sizeE
          , newW  = sizeW
          ;
          if (reqPx > 0 && state.east.isVisible && sizeE > minE) {
            newE = max( sizeE-minE, sizeE-reqPx );
            reqPx -= sizeE-newE;
          }
          if (reqPx > 0 && state.west.isVisible && sizeW > minW) {
            newW = max( sizeW-minW, sizeW-reqPx );
            reqPx -= sizeW-newW;
          }
          // IF we found enough extra space, then resize the border panes as calculated
          if (reqPx === 0) {
            if (sizeE && sizeE != minE)
              sizePane('east', newE, true, true, force); // true = skipCallback/noAnimation - initPanes will handle when done
            if (sizeW && sizeW != minW)
              sizePane('west', newW, true, true, force); // true = skipCallback/noAnimation
            // now start over!
            sizeMidPanes('center', skipCallback, force);
            $P.css(visCSS);
            return; // abort this loop
          }
        }
      }
      else { // for east and west, set only the height, which is same as center height
        // set state.min/maxWidth/Height for makePaneFit() logic
        if (s.isVisible && !s.noVerticalRoom)
          $.extend(s, elDims($P), cssMinDims(pane))
        if (!force && !s.noVerticalRoom && newCenter.height === s.outerHeight) {
          $P.css(visCSS);
          return true; // SKIP - pane already the correct size
        }
        // east/west have same top, bottom & height as center
        CSS.top   = newCenter.top;
        CSS.bottom  = newCenter.bottom;
        s.newSize = newCenter.height
        // NEW - allow pane to extend 'below' visible area rather than hide it
        CSS.height  = cssH($P, newCenter.height);
        s.maxHeight = CSS.height;
        hasRoom   = (s.maxHeight >= 0); // ALWAYS TRUE NOW
        if (!hasRoom) s.noVerticalRoom = true; // makePaneFit() logic
      }

      if (hasRoom) {
        // resizeAll passes skipCallback because it triggers callbacks after ALL panes are resized
        if (!skipCallback && state.initialized)
          _runCallbacks("onresize_start", pane);

        $P.css(CSS); // apply the CSS to pane
        if (pane !== "center")
          sizeHandles(pane); // also update resizer length
        if (s.noRoom && !s.isClosed && !s.isHidden)
          makePaneFit(pane); // will re-open/show auto-closed/hidden pane
        if (s.isVisible) {
          $.extend(s, elDims($P)); // update pane dimensions
          if (state.initialized) sizeContent(pane); // also resize the contents, if exists
        }
      }
      else if (!s.noRoom && s.isVisible) // no room for pane
        makePaneFit(pane); // will hide or close pane

      // reset visibility, if necessary
      $P.css(visCSS);

      delete s.newSize;
      delete s.newWidth;
      delete s.newHeight;

      if (!s.isVisible)
        return true; // DONE - next pane

      /*
       * Extra CSS for IE6 or IE7 in Quirks-mode - add 'width' to NORTH/SOUTH panes
       * Normally these panes have only 'left' & 'right' positions so pane auto-sizes
       * ALSO required when pane is an IFRAME because will NOT default to 'full width'
       *  TODO: Can I use width:100% for a north/south iframe?
       *  TODO: Sounds like a job for $P.outerWidth( sC.innerWidth ) SETTER METHOD
       */
      if (pane === "center") { // finished processing midPanes
        var fix = browser.isIE6 || !browser.boxModel;
        if ($Ps.north && (fix || state.north.tagName=="IFRAME")) 
          $Ps.north.css("width", cssW($Ps.north, sC.innerWidth));
        if ($Ps.south && (fix || state.south.tagName=="IFRAME"))
          $Ps.south.css("width", cssW($Ps.south, sC.innerWidth));
      }

      // resizeAll passes skipCallback because it triggers callbacks after ALL panes are resized
      if (!skipCallback && state.initialized)
        _runCallbacks("onresize_end", pane);
    });
  }


  /**
   * @see  window.onresize(), callbacks or custom code
   * @param {(Object|boolean)=} evt_or_refresh  If 'true', then also reset pane-positioning
   */
, resizeAll = function (evt_or_refresh) {
    var oldW  = sC.innerWidth
    , oldH  = sC.innerHeight
    ;
    // stopPropagation if called by trigger("layoutdestroy") - use evtPane utility 
    evtPane(evt_or_refresh);

    // cannot size layout when 'container' is hidden or collapsed
    if (!$N.is(":visible")) return;

    if (!state.initialized) {
      _initLayoutElements();
      return; // no need to resize since we just initialized!
    }

    if (evt_or_refresh === true && $.isPlainObject(options.outset)) {
      // update container CSS in case outset option has changed
      $N.css( options.outset );
    }
    // UPDATE container dimensions
    $.extend(sC, elDims( $N, options.inset ));
    if (!sC.outerHeight) return;

    // if 'true' passed, refresh pane & handle positioning too
    if (evt_or_refresh === true) {
      setPanePosition();
    }

    // onresizeall_start will CANCEL resizing if returns false
    // state.container has already been set, so user can access this info for calcuations
    if (false === _runCallbacks("onresizeall_start")) return false;

    var // see if container is now 'smaller' than before
      shrunkH = (sC.innerHeight < oldH)
    , shrunkW = (sC.innerWidth < oldW)
    , $P, o, s
    ;
    // NOTE special order for sizing: S-N-E-W
    $.each(["south","north","east","west"], function (i, pane) {
      if (!$Ps[pane]) return; // no pane - SKIP
      o = options[pane];
      s = state[pane];
      if (s.autoResize && s.size != o.size) // resize pane to original size set in options
        sizePane(pane, o.size, true, true, true); // true=skipCallback/noAnimation/forceResize
      else {
        setSizeLimits(pane);
        makePaneFit(pane, false, true, true); // true=skipCallback/forceResize
      }
    });

    sizeMidPanes("", true, true); // true=skipCallback/forceResize
    sizeHandles(); // reposition the toggler elements

    // trigger all individual pane callbacks AFTER layout has finished resizing
    $.each(_c.allPanes, function (i, pane) {
      $P = $Ps[pane];
      if (!$P) return; // SKIP
      if (state[pane].isVisible) // undefined for non-existent panes
        _runCallbacks("onresize_end", pane); // callback - if exists
    });

    _runCallbacks("onresizeall_end");
    //_triggerLayoutEvent(pane, 'resizeall');
  }

  /**
   * Whenever a pane resizes or opens that has a nested layout, trigger resizeAll
   *
   * @param {(string|Object)} evt_or_pane   The pane just resized or opened
   */
, resizeChildren = function (evt_or_pane, skipRefresh) {
    var pane = evtPane.call(this, evt_or_pane);

    if (!options[pane].resizeChildren) return;

    // ensure the pane-children are up-to-date
    if (!skipRefresh) refreshChildren( pane );
    var pC = children[pane];
    if ($.isPlainObject( pC )) {
      // resize one or more children
      $.each( pC, function (key, child) {
        if (!child.destroyed) child.resizeAll();
      });
    }
  }

  /**
   * IF pane has a content-div, then resize all elements inside pane to fit pane-height
   *
   * @param {(string|Object)} evt_or_panes    The pane(s) being resized
   * @param {boolean=}      [remeasure=false] Should the content (header/footer) be remeasured?
   */
, sizeContent = function (evt_or_panes, remeasure) {
    if (!isInitialized()) return;

    var panes = evtPane.call(this, evt_or_panes);
    panes = panes ? panes.split(",") : _c.allPanes;

    $.each(panes, function (idx, pane) {
      var
        $P  = $Ps[pane]
      , $C  = $Cs[pane]
      , o = options[pane]
      , s = state[pane]
      , m = s.content // m = measurements
      ;
      if (!$P || !$C || !$P.is(":visible")) return true; // NOT VISIBLE - skip

      // if content-element was REMOVED, update OR remove the pointer
      if (!$C.length) {
        initContent(pane, false); // false = do NOT sizeContent() - already there!
        if (!$C) return;      // no replacement element found - pointer have been removed
      }

      // onsizecontent_start will CANCEL resizing if returns false
      if (false === _runCallbacks("onsizecontent_start", pane)) return;

      // skip re-measuring offsets if live-resizing
      if ((!s.isMoving && !s.isResizing) || o.liveContentResizing || remeasure || m.top == undefined) {
        _measure();
        // if any footers are below pane-bottom, they may not measure correctly,
        // so allow pane overflow and re-measure
        if (m.hiddenFooters > 0 && $P.css("overflow") === "hidden") {
          $P.css("overflow", "visible");
          _measure(); // remeasure while overflowing
          $P.css("overflow", "hidden");
        }
      }
      // NOTE: spaceAbove/Below *includes* the pane paddingTop/Bottom, but not pane.borders
      var newH = s.innerHeight - (m.spaceAbove - s.css.paddingTop) - (m.spaceBelow - s.css.paddingBottom);

      if (!$C.is(":visible") || m.height != newH) {
        // size the Content element to fit new pane-size - will autoHide if not enough room
        setOuterHeight($C, newH, true); // true=autoHide
        m.height = newH; // save new height
      };

      if (state.initialized)
        _runCallbacks("onsizecontent_end", pane);

      function _below ($E) {
        return max(s.css.paddingBottom, (parseInt($E.css("marginBottom"), 10) || 0));
      };

      function _measure () {
        var
          ignore  = options[pane].contentIgnoreSelector
        , $Fs   = $C.nextAll().not(".ui-layout-mask").not(ignore || ":lt(0)") // not :lt(0) = ALL
        , $Fs_vis = $Fs.filter(':visible')
        , $F    = $Fs_vis.filter(':last')
        ;
        m = {
          top:      $C[0].offsetTop
        , height:     $C.outerHeight()
        , numFooters:   $Fs.length
        , hiddenFooters:  $Fs.length - $Fs_vis.length
        , spaceBelow:   0 // correct if no content footer ($E)
        }
          m.spaceAbove  = m.top; // just for state - not used in calc
          m.bottom    = m.top + m.height;
        if ($F.length)
          //spaceBelow = (LastFooter.top + LastFooter.height) [footerBottom] - Content.bottom + max(LastFooter.marginBottom, pane.paddingBotom)
          m.spaceBelow = ($F[0].offsetTop + $F.outerHeight()) - m.bottom + _below($F);
        else // no footer - check marginBottom on Content element itself
          m.spaceBelow = _below($C);
      };
    });
  }


  /**
   * Called every time a pane is opened, closed, or resized to slide the togglers to 'center' and adjust their length if necessary
   *
   * @see  initHandles(), open(), close(), resizeAll()
   * @param {(string|Object)=}    evt_or_panes  The pane(s) being resized
   */
, sizeHandles = function (evt_or_panes) {
    var panes = evtPane.call(this, evt_or_panes)
    panes = panes ? panes.split(",") : _c.borderPanes;

    $.each(panes, function (i, pane) {
      var 
        o = options[pane]
      , s = state[pane]
      , $P  = $Ps[pane]
      , $R  = $Rs[pane]
      , $T  = $Ts[pane]
      , $TC
      ;
      if (!$P || !$R) return;

      var
        dir     = _c[pane].dir
      , _state    = (s.isClosed ? "_closed" : "_open")
      , spacing   = o["spacing"+ _state]
      , togAlign  = o["togglerAlign"+ _state]
      , togLen    = o["togglerLength"+ _state]
      , paneLen
      , left
      , offset
      , CSS = {}
      ;

      if (spacing === 0) {
        $R.hide();
        return;
      }
      else if (!s.noRoom && !s.isHidden) // skip if resizer was hidden for any reason
        $R.show(); // in case was previously hidden

      // Resizer Bar is ALWAYS same width/height of pane it is attached to
      if (dir === "horz") { // north/south
        //paneLen = $P.outerWidth(); // s.outerWidth || 
        paneLen = sC.innerWidth; // handle offscreen-panes
        s.resizerLength = paneLen;
        left = $.layout.cssNum($P, "left")
        $R.css({
          width:  cssW($R, paneLen) // account for borders & padding
        , height: cssH($R, spacing) // ditto
        , left: left > -9999 ? left : sC.inset.left // handle offscreen-panes
        });
      }
      else { // east/west
        paneLen = $P.outerHeight(); // s.outerHeight || 
        s.resizerLength = paneLen;
        $R.css({
          height: cssH($R, paneLen) // account for borders & padding
        , width:  cssW($R, spacing) // ditto
        , top:  sC.inset.top + getPaneSize("north", true) // TODO: what if no North pane?
        //, top:  $.layout.cssNum($Ps["center"], "top")
        });
      }

      // remove hover classes
      removeHover( o, $R );

      if ($T) {
        if (togLen === 0 || (s.isSliding && o.hideTogglerOnSlide)) {
          $T.hide(); // always HIDE the toggler when 'sliding'
          return;
        }
        else
          $T.show(); // in case was previously hidden

        if (!(togLen > 0) || togLen === "100%" || togLen > paneLen) {
          togLen = paneLen;
          offset = 0;
        }
        else { // calculate 'offset' based on options.PANE.togglerAlign_open/closed
          if (isStr(togAlign)) {
            switch (togAlign) {
              case "top":
              case "left":  offset = 0;
                      break;
              case "bottom":
              case "right": offset = paneLen - togLen;
                      break;
              case "middle":
              case "center":
              default:    offset = round((paneLen - togLen) / 2); // 'default' catches typos
            }
          }
          else { // togAlign = number
            var x = parseInt(togAlign, 10); //
            if (togAlign >= 0) offset = x;
            else offset = paneLen - togLen + x; // NOTE: x is negative!
          }
        }

        if (dir === "horz") { // north/south
          var width = cssW($T, togLen);
          $T.css({
            width:  width  // account for borders & padding
          , height: cssH($T, spacing) // ditto
          , left: offset // TODO: VERIFY that toggler  positions correctly for ALL values
          , top:  0
          });
          // CENTER the toggler content SPAN
          $T.children(".content").each(function(){
            $TC = $(this);
            $TC.css("marginLeft", round((width-$TC.outerWidth())/2)); // could be negative
          });
        }
        else { // east/west
          var height = cssH($T, togLen);
          $T.css({
            height: height // account for borders & padding
          , width:  cssW($T, spacing) // ditto
          , top:  offset // POSITION the toggler
          , left: 0
          });
          // CENTER the toggler content SPAN
          $T.children(".content").each(function(){
            $TC = $(this);
            $TC.css("marginTop", round((height-$TC.outerHeight())/2)); // could be negative
          });
        }

        // remove ALL hover classes
        removeHover( 0, $T );
      }

      // DONE measuring and sizing this resizer/toggler, so can be 'hidden' now
      if (!state.initialized && (o.initHidden || s.isHidden)) {
        $R.hide();
        if ($T) $T.hide();
      }
    });
  }


  /**
   * @param {(string|Object)} evt_or_pane
   */
, enableClosable = function (evt_or_pane) {
    if (!isInitialized()) return;
    var pane = evtPane.call(this, evt_or_pane)
    , $T  = $Ts[pane]
    , o = options[pane]
    ;
    if (!$T) return;
    o.closable = true;
    $T  .bind("click."+ sID, function(evt){ evt.stopPropagation(); toggle(pane); })
      .css("visibility", "visible")
      .css("cursor", "pointer")
      .attr("title", state[pane].isClosed ? o.tips.Open : o.tips.Close) // may be blank
      .show();
  }
  /**
   * @param {(string|Object)} evt_or_pane
   * @param {boolean=}      [hide=false]
   */
, disableClosable = function (evt_or_pane, hide) {
    if (!isInitialized()) return;
    var pane = evtPane.call(this, evt_or_pane)
    , $T  = $Ts[pane]
    ;
    if (!$T) return;
    options[pane].closable = false;
    // is closable is disable, then pane MUST be open!
    if (state[pane].isClosed) open(pane, false, true);
    $T  .unbind("."+ sID)
      .css("visibility", hide ? "hidden" : "visible") // instead of hide(), which creates logic issues
      .css("cursor", "default")
      .attr("title", "");
  }


  /**
   * @param {(string|Object)} evt_or_pane
   */
, enableSlidable = function (evt_or_pane) {
    if (!isInitialized()) return;
    var pane = evtPane.call(this, evt_or_pane)
    , $R  = $Rs[pane]
    ;
    if (!$R || !$R.data('draggable')) return;
    options[pane].slidable = true; 
    if (state[pane].isClosed)
      bindStartSlidingEvents(pane, true);
  }
  /**
   * @param {(string|Object)} evt_or_pane
   */
, disableSlidable = function (evt_or_pane) {
    if (!isInitialized()) return;
    var pane = evtPane.call(this, evt_or_pane)
    , $R  = $Rs[pane]
    ;
    if (!$R) return;
    options[pane].slidable = false; 
    if (state[pane].isSliding)
      close(pane, false, true);
    else {
      bindStartSlidingEvents(pane, false);
      $R  .css("cursor", "default")
        .attr("title", "");
      removeHover(null, $R[0]); // in case currently hovered
    }
  }


  /**
   * @param {(string|Object)} evt_or_pane
   */
, enableResizable = function (evt_or_pane) {
    if (!isInitialized()) return;
    var pane = evtPane.call(this, evt_or_pane)
    , $R  = $Rs[pane]
    , o = options[pane]
    ;
    if (!$R || !$R.data('draggable')) return;
    o.resizable = true; 
    $R.draggable("enable");
    if (!state[pane].isClosed)
      $R  .css("cursor", o.resizerCursor)
        .attr("title", o.tips.Resize);
  }
  /**
   * @param {(string|Object)} evt_or_pane
   */
, disableResizable = function (evt_or_pane) {
    if (!isInitialized()) return;
    var pane = evtPane.call(this, evt_or_pane)
    , $R  = $Rs[pane]
    ;
    if (!$R || !$R.data('draggable')) return;
    options[pane].resizable = false; 
    $R  .draggable("disable")
      .css("cursor", "default")
      .attr("title", "");
    removeHover(null, $R[0]); // in case currently hovered
  }


  /**
   * Move a pane from source-side (eg, west) to target-side (eg, east)
   * If pane exists on target-side, move that to source-side, ie, 'swap' the panes
   *
   * @param {(string|Object)} evt_or_pane1  The pane/edge being swapped
   * @param {string}      pane2     ditto
   */
, swapPanes = function (evt_or_pane1, pane2) {
    if (!isInitialized()) return;
    var pane1 = evtPane.call(this, evt_or_pane1);
    // change state.edge NOW so callbacks can know where pane is headed...
    state[pane1].edge = pane2;
    state[pane2].edge = pane1;
    // run these even if NOT state.initialized
    if (false === _runCallbacks("onswap_start", pane1)
     || false === _runCallbacks("onswap_start", pane2)
    ) {
      state[pane1].edge = pane1; // reset
      state[pane2].edge = pane2;
      return;
    }

    var
      oPane1  = copy( pane1 )
    , oPane2  = copy( pane2 )
    , sizes = {}
    ;
    sizes[pane1] = oPane1 ? oPane1.state.size : 0;
    sizes[pane2] = oPane2 ? oPane2.state.size : 0;

    // clear pointers & state
    $Ps[pane1] = false; 
    $Ps[pane2] = false;
    state[pane1] = {};
    state[pane2] = {};
    
    // ALWAYS remove the resizer & toggler elements
    if ($Ts[pane1]) $Ts[pane1].remove();
    if ($Ts[pane2]) $Ts[pane2].remove();
    if ($Rs[pane1]) $Rs[pane1].remove();
    if ($Rs[pane2]) $Rs[pane2].remove();
    $Rs[pane1] = $Rs[pane2] = $Ts[pane1] = $Ts[pane2] = false;

    // transfer element pointers and data to NEW Layout keys
    move( oPane1, pane2 );
    move( oPane2, pane1 );

    // cleanup objects
    oPane1 = oPane2 = sizes = null;

    // make panes 'visible' again
    if ($Ps[pane1]) $Ps[pane1].css(_c.visible);
    if ($Ps[pane2]) $Ps[pane2].css(_c.visible);

    // fix any size discrepancies caused by swap
    resizeAll();

    // run these even if NOT state.initialized
    _runCallbacks("onswap_end", pane1);
    _runCallbacks("onswap_end", pane2);

    return;

    function copy (n) { // n = pane
      var
        $P  = $Ps[n]
      , $C  = $Cs[n]
      ;
      return !$P ? false : {
        pane:   n
      , P:      $P ? $P[0] : false
      , C:      $C ? $C[0] : false
      , state:    $.extend(true, {}, state[n])
      , options:  $.extend(true, {}, options[n])
      }
    };

    function move (oPane, pane) {
      if (!oPane) return;
      var
        P   = oPane.P
      , C   = oPane.C
      , oldPane = oPane.pane
      , c   = _c[pane]
      //  save pane-options that should be retained
      , s   = $.extend(true, {}, state[pane])
      , o   = options[pane]
      //  RETAIN side-specific FX Settings - more below
      , fx    = { resizerCursor: o.resizerCursor }
      , re, size, pos
      ;
      $.each("fxName,fxSpeed,fxSettings".split(","), function (i, k) {
        fx[k +"_open"]  = o[k +"_open"];
        fx[k +"_close"] = o[k +"_close"];
        fx[k +"_size"]  = o[k +"_size"];
      });

      // update object pointers and attributes
      $Ps[pane] = $(P)
        .data({
          layoutPane:   Instance[pane]  // NEW pointer to pane-alias-object
        , layoutEdge:   pane
        })
        .css(_c.hidden)
        .css(c.cssReq)
      ;
      $Cs[pane] = C ? $(C) : false;

      // set options and state
      options[pane] = $.extend(true, {}, oPane.options, fx);
      state[pane]   = $.extend(true, {}, oPane.state);

      // change classNames on the pane, eg: ui-layout-pane-east ==> ui-layout-pane-west
      re = new RegExp(o.paneClass +"-"+ oldPane, "g");
      P.className = P.className.replace(re, o.paneClass +"-"+ pane);

      // ALWAYS regenerate the resizer & toggler elements
      initHandles(pane); // create the required resizer & toggler

      // if moving to different orientation, then keep 'target' pane size
      if (c.dir != _c[oldPane].dir) {
        size = sizes[pane] || 0;
        setSizeLimits(pane); // update pane-state
        size = max(size, state[pane].minSize);
        // use manualSizePane to disable autoResize - not useful after panes are swapped
        manualSizePane(pane, size, true, true); // true/true = skipCallback/noAnimation
      }
      else // move the resizer here
        $Rs[pane].css(c.side, sC.inset[c.side] + (state[pane].isVisible ? getPaneSize(pane) : 0));


      // ADD CLASSNAMES & SLIDE-BINDINGS
      if (oPane.state.isVisible && !s.isVisible)
        setAsOpen(pane, true); // true = skipCallback
      else {
        setAsClosed(pane);
        bindStartSlidingEvents(pane, true); // will enable events IF option is set
      }

      // DESTROY the object
      oPane = null;
    };
  }


  /**
   * INTERNAL method to sync pin-buttons when pane is opened or closed
   * Unpinned means the pane is 'sliding' - ie, over-top of the adjacent panes
   *
   * @see  open(), setAsOpen(), setAsClosed()
   * @param {string}  pane   These are the params returned to callbacks by layout()
   * @param {boolean} doPin  True means set the pin 'down', False means 'up'
   */
, syncPinBtns = function (pane, doPin) {
    if ($.layout.plugins.buttons)
      $.each(state[pane].pins, function (i, selector) {
        $.layout.buttons.setPinState(Instance, $(selector), pane, doPin);
      });
  }

; // END var DECLARATIONS

  /**
   * Capture keys when enableCursorHotkey - toggle pane if hotkey pressed
   *
   * @see  document.keydown()
   */
  function keyDown (evt) {
    if (!evt) return true;
    var code = evt.keyCode;
    if (code < 33) return true; // ignore special keys: ENTER, TAB, etc

    var
      PANE = {
        38: "north" // Up Cursor  - $.ui.keyCode.UP
      , 40: "south" // Down Cursor  - $.ui.keyCode.DOWN
      , 37: "west"  // Left Cursor  - $.ui.keyCode.LEFT
      , 39: "east"  // Right Cursor - $.ui.keyCode.RIGHT
      }
    , ALT   = evt.altKey // no worky!
    , SHIFT = evt.shiftKey
    , CTRL  = evt.ctrlKey
    , CURSOR  = (CTRL && code >= 37 && code <= 40)
    , o, k, m, pane
    ;

    if (CURSOR && options[PANE[code]].enableCursorHotkey) // valid cursor-hotkey
      pane = PANE[code];
    else if (CTRL || SHIFT) // check to see if this matches a custom-hotkey
      $.each(_c.borderPanes, function (i, p) { // loop each pane to check its hotkey
        o = options[p];
        k = o.customHotkey;
        m = o.customHotkeyModifier; // if missing or invalid, treated as "CTRL+SHIFT"
        if ((SHIFT && m=="SHIFT") || (CTRL && m=="CTRL") || (CTRL && SHIFT)) { // Modifier matches
          if (k && code === (isNaN(k) || k <= 9 ? k.toUpperCase().charCodeAt(0) : k)) { // Key matches
            pane = p;
            return false; // BREAK
          }
        }
      });

    // validate pane
    if (!pane || !$Ps[pane] || !options[pane].closable || state[pane].isHidden)
      return true;

    toggle(pane);

    evt.stopPropagation();
    evt.returnValue = false; // CANCEL key
    return false;
  };


/*
 * ######################################
 *  UTILITY METHODS
 *  called externally or by initButtons
 * ######################################
 */

  /**
   * Change/reset a pane overflow setting & zIndex to allow popups/drop-downs to work
   *
   * @param {Object=}   [el]  (optional) Can also be 'bound' to a click, mouseOver, or other event
   */
  function allowOverflow (el) {
    if (!isInitialized()) return;
    if (this && this.tagName) el = this; // BOUND to element
    var $P;
    if (isStr(el))
      $P = $Ps[el];
    else if ($(el).data("layoutRole"))
      $P = $(el);
    else
      $(el).parents().each(function(){
        if ($(this).data("layoutRole")) {
          $P = $(this);
          return false; // BREAK
        }
      });
    if (!$P || !$P.length) return; // INVALID

    var
      pane  = $P.data("layoutEdge")
    , s   = state[pane]
    ;

    // if pane is already raised, then reset it before doing it again!
    // this would happen if allowOverflow is attached to BOTH the pane and an element 
    if (s.cssSaved)
      resetOverflow(pane); // reset previous CSS before continuing

    // if pane is raised by sliding or resizing, or its closed, then abort
    if (s.isSliding || s.isResizing || s.isClosed) {
      s.cssSaved = false;
      return;
    }

    var
      newCSS  = { zIndex: (options.zIndexes.resizer_normal + 1) }
    , curCSS  = {}
    , of    = $P.css("overflow")
    , ofX   = $P.css("overflowX")
    , ofY   = $P.css("overflowY")
    ;
    // determine which, if any, overflow settings need to be changed
    if (of != "visible") {
      curCSS.overflow = of;
      newCSS.overflow = "visible";
    }
    if (ofX && !ofX.match(/(visible|auto)/)) {
      curCSS.overflowX = ofX;
      newCSS.overflowX = "visible";
    }
    if (ofY && !ofY.match(/(visible|auto)/)) {
      curCSS.overflowY = ofX;
      newCSS.overflowY = "visible";
    }

    // save the current overflow settings - even if blank!
    s.cssSaved = curCSS;

    // apply new CSS to raise zIndex and, if necessary, make overflow 'visible'
    $P.css( newCSS );

    // make sure the zIndex of all other panes is normal
    $.each(_c.allPanes, function(i, p) {
      if (p != pane) resetOverflow(p);
    });

  };
  /**
   * @param {Object=}   [el]  (optional) Can also be 'bound' to a click, mouseOver, or other event
   */
  function resetOverflow (el) {
    if (!isInitialized()) return;
    if (this && this.tagName) el = this; // BOUND to element
    var $P;
    if (isStr(el))
      $P = $Ps[el];
    else if ($(el).data("layoutRole"))
      $P = $(el);
    else
      $(el).parents().each(function(){
        if ($(this).data("layoutRole")) {
          $P = $(this);
          return false; // BREAK
        }
      });
    if (!$P || !$P.length) return; // INVALID

    var
      pane  = $P.data("layoutEdge")
    , s   = state[pane]
    , CSS   = s.cssSaved || {}
    ;
    // reset the zIndex
    if (!s.isSliding && !s.isResizing)
      $P.css("zIndex", options.zIndexes.pane_normal);

    // reset Overflow - if necessary
    $P.css( CSS );

    // clear var
    s.cssSaved = false;
  };

/*
 * #####################
 * CREATE/RETURN LAYOUT
 * #####################
 */

  // validate that container exists
  var $N = $(this).eq(0); // FIRST matching Container element
  if (!$N.length) {
    return _log( options.errors.containerMissing );
  };

  // Users retrieve Instance of a layout with: $N.layout() OR $N.data("layout")
  // return the Instance-pointer if layout has already been initialized
  if ($N.data("layoutContainer") && $N.data("layout"))
    return $N.data("layout"); // cached pointer

  // init global vars
  var 
    $Ps = {}  // Panes x5   - set in initPanes()
  , $Cs = {}  // Content x5 - set in initPanes()
  , $Rs = {}  // Resizers x4  - set in initHandles()
  , $Ts = {}  // Togglers x4  - set in initHandles()
  , $Ms = $([]) // Masks - up to 2 masks per pane (IFRAME + DIV)
  //  aliases for code brevity
  , sC  = state.container // alias for easy access to 'container dimensions'
  , sID = state.id // alias for unique layout ID/namespace - eg: "layout435"
  ;

  // create Instance object to expose data & option Properties, and primary action Methods
  var Instance = {
  //  layout data
    options:      options     // property - options hash
  , state:        state     // property - dimensions hash
  //  object pointers
  , container:      $N        // property - object pointers for layout container
  , panes:        $Ps       // property - object pointers for ALL Panes: panes.north, panes.center
  , contents:     $Cs       // property - object pointers for ALL Content: contents.north, contents.center
  , resizers:     $Rs       // property - object pointers for ALL Resizers, eg: resizers.north
  , togglers:     $Ts       // property - object pointers for ALL Togglers, eg: togglers.north
  //  border-pane open/close
  , hide:       hide      // method - ditto
  , show:       show      // method - ditto
  , toggle:       toggle      // method - pass a 'pane' ("north", "west", etc)
  , open:       open      // method - ditto
  , close:        close     // method - ditto
  , slideOpen:      slideOpen   // method - ditto
  , slideClose:     slideClose    // method - ditto
  , slideToggle:    slideToggle   // method - ditto
  //  pane actions
  , setSizeLimits:    setSizeLimits // method - pass a 'pane' - update state min/max data
  , _sizePane:      sizePane    // method -intended for user by plugins only!
  , sizePane:     manualSizePane  // method - pass a 'pane' AND an 'outer-size' in pixels or percent, or 'auto'
  , sizeContent:    sizeContent   // method - pass a 'pane'
  , swapPanes:      swapPanes   // method - pass TWO 'panes' - will swap them
  , showMasks:      showMasks   // method - pass a 'pane' OR list of panes - default = all panes with mask option set
  , hideMasks:      hideMasks   // method - ditto'
  //  pane element methods
  , initContent:    initContent   // method - ditto
  , addPane:      addPane     // method - pass a 'pane'
  , removePane:     removePane    // method - pass a 'pane' to remove from layout, add 'true' to delete the pane-elem
  , createChildren:   createChildren  // method - pass a 'pane' and (optional) layout-options (OVERRIDES options[pane].children
  , refreshChildren:  refreshChildren // method - pass a 'pane' and a layout-instance
  //  special pane option setting
  , enableClosable:   enableClosable  // method - pass a 'pane'
  , disableClosable:  disableClosable // method - ditto
  , enableSlidable:   enableSlidable  // method - ditto
  , disableSlidable:  disableSlidable // method - ditto
  , enableResizable:  enableResizable // method - ditto
  , disableResizable: disableResizable// method - ditto
  //  utility methods for panes
  , allowOverflow:    allowOverflow // utility - pass calling element (this)
  , resetOverflow:    resetOverflow // utility - ditto
  //  layout control
  , destroy:      destroy     // method - no parameters
  , initPanes:      isInitialized // method - no parameters
  , resizeAll:      resizeAll   // method - no parameters
  //  callback triggering
  , runCallbacks:   _runCallbacks // method - pass evtName & pane (if a pane-event), eg: trigger("onopen", "west")
  //  alias collections of options, state and children - created in addPane and extended elsewhere
  , hasParentLayout:  false     // set by initContainer()
  , children:     children    // pointers to child-layouts, eg: Instance.children.west.layoutName
  , north:        false     // alias group: { name: pane, pane: $Ps[pane], options: options[pane], state: state[pane], children: children[pane] }
  , south:        false     // ditto
  , west:       false     // ditto
  , east:       false     // ditto
  , center:       false     // ditto
  };

  // create the border layout NOW
  if (_create() === 'cancel') // onload_start callback returned false to CANCEL layout creation
    return null;
  else // true OR false -- if layout-elements did NOT init (hidden or do not exist), can auto-init later
    return Instance; // return the Instance object

}


})( jQuery );




/**
 * jquery.layout.state 1.2
 * $Date: 2014-08-30 08:00:00 (Sat, 30 Aug 2014) $
 *
 * Copyright (c) 2014 
 *   Kevin Dalman (http://allpro.net)
 *
 * Dual licensed under the GPL (http://www.gnu.org/licenses/gpl.html)
 * and MIT (http://www.opensource.org/licenses/mit-license.php) licenses.
 *
 * @requires: UI Layout 1.4.0 or higher
 * @requires: $.ui.cookie (above)
 *
 * @see: http://groups.google.com/group/jquery-ui-layout
 */
;(function ($) {

if (!$.layout) return;


/**
 *  UI COOKIE UTILITY
 *
 *  A $.cookie OR $.ui.cookie namespace *should be standard*, but until then...
 *  This creates $.ui.cookie so Layout does not need the cookie.jquery.js plugin
 *  NOTE: This utility is REQUIRED by the layout.state plugin
 *
 *  Cookie methods in Layout are created as part of State Management 
 */
if (!$.ui) $.ui = {};
$.ui.cookie = {

  // cookieEnabled is not in DOM specs, but DOES works in all browsers,including IE6
  acceptsCookies: !!navigator.cookieEnabled

, read: function (name) {
    var
      c = document.cookie
    , cs  = c ? c.split(';') : []
    , pair, data, i
    ;
    for (i=0; pair=cs[i]; i++) {
      data = $.trim(pair).split('='); // name=value => [ name, value ]
      if (data[0] == name) // found the layout cookie
        return decodeURIComponent(data[1]);
    }
    return null;
  }

, write: function (name, val, cookieOpts) {
    var params  = ""
    , date  = ""
    , clear = false
    , o   = cookieOpts || {}
    , x   = o.expires  || null
    , t   = $.type(x)
    ;
    if (t === "date")
      date = x;
    else if (t === "string" && x > 0) {
      x = parseInt(x,10);
      t = "number";
    }
    if (t === "number") {
      date = new Date();
      if (x > 0)
        date.setDate(date.getDate() + x);
      else {
        date.setFullYear(1970);
        clear = true;
      }
    }
    if (date)   params += ";expires="+ date.toUTCString();
    if (o.path)   params += ";path="+ o.path;
    if (o.domain) params += ";domain="+ o.domain;
    if (o.secure) params += ";secure";
    document.cookie = name +"="+ (clear ? "" : encodeURIComponent( val )) + params; // write or clear cookie
  }

, clear: function (name) {
    $.ui.cookie.write(name, "", {expires: -1});
  }

};
// if cookie.jquery.js is not loaded, create an alias to replicate it
// this may be useful to other plugins or code dependent on that plugin
if (!$.cookie) $.cookie = function (k, v, o) {
  var C = $.ui.cookie;
  if (v === null)
    C.clear(k);
  else if (v === undefined)
    return C.read(k);
  else
    C.write(k, v, o);
};



/**
 *  State-management options stored in options.stateManagement, which includes a .cookie hash
 *  Default options saves ALL KEYS for ALL PANES, ie: pane.size, pane.isClosed, pane.isHidden
 *
 *  // STATE/COOKIE OPTIONS
 *  @example $(el).layout({
        stateManagement: {
          enabled:  true
        , stateKeys:  "east.size,west.size,east.isClosed,west.isClosed"
        , cookie:   { name: "appLayout", path: "/" }
        }
      })
 *  @example $(el).layout({ stateManagement__enabled: true }) // enable auto-state-management using cookies
 *  @example $(el).layout({ stateManagement__cookie: { name: "appLayout", path: "/" } })
 *  @example $(el).layout({ stateManagement__cookie__name: "appLayout", stateManagement__cookie__path: "/" })
 *
 *  // STATE/COOKIE METHODS
 *  @example myLayout.saveCookie( "west.isClosed,north.size,south.isHidden", {expires: 7} );
 *  @example myLayout.loadCookie();
 *  @example myLayout.deleteCookie();
 *  @example var JSON = myLayout.readState(); // CURRENT Layout State
 *  @example var JSON = myLayout.readCookie();  // SAVED Layout State (from cookie)
 *  @example var JSON = myLayout.state.stateData; // LAST LOADED Layout State (cookie saved in layout.state hash)
 *
 *  CUSTOM STATE-MANAGEMENT (eg, saved in a database)
 *  @example var JSON = myLayout.readState( "west.isClosed,north.size,south.isHidden" );
 *  @example myLayout.loadState( JSON );
 */

// tell Layout that the state plugin is available
$.layout.plugins.stateManagement = true;

//  Add State-Management options to layout.defaults
$.layout.defaults.stateManagement = {
  enabled:    false // true = enable state-management, even if not using cookies
, autoSave:   true  // Save a state-cookie when page exits?
, autoLoad:   true  // Load the state-cookie when Layout inits?
, animateLoad:  true  // animate panes when loading state into an active layout
, includeChildren: true // recurse into child layouts to include their state as well
  // List state-data to save - must be pane-specific
, stateKeys:  "north.size,south.size,east.size,west.size,"+
        "north.isClosed,south.isClosed,east.isClosed,west.isClosed,"+
        "north.isHidden,south.isHidden,east.isHidden,west.isHidden"
, cookie: {
    name: ""  // If not specified, will use Layout.name, else just "Layout"
  , domain: ""  // blank = current domain
  , path: ""  // blank = current page, "/" = entire website
  , expires: "" // 'days' to keep cookie - leave blank for 'session cookie'
  , secure: false
  }
};

// Set stateManagement as a 'layout-option', NOT a 'pane-option'
$.layout.optionsMap.layout.push("stateManagement");
// Update config so layout does not move options into the pane-default branch (panes)
$.layout.config.optionRootKeys.push("stateManagement");

/*
 *  State Management methods
 */
$.layout.state = {

  /**
   * Get the current layout state and save it to a cookie
   *
   * myLayout.saveCookie( keys, cookieOpts )
   *
   * @param {Object}      inst
   * @param {(string|Array)=} keys
   * @param {Object=}     cookieOpts
   */
  saveCookie: function (inst, keys, cookieOpts) {
    var o = inst.options
    , sm  = o.stateManagement
    , oC  = $.extend(true, {}, sm.cookie, cookieOpts || null)
    , data = inst.state.stateData = inst.readState( keys || sm.stateKeys ) // read current panes-state
    ;
    $.ui.cookie.write( oC.name || o.name || "Layout", $.layout.state.encodeJSON(data), oC );
    return $.extend(true, {}, data); // return COPY of state.stateData data
  }

  /**
   * Remove the state cookie
   *
   * @param {Object}  inst
   */
, deleteCookie: function (inst) {
    var o = inst.options;
    $.ui.cookie.clear( o.stateManagement.cookie.name || o.name || "Layout" );
  }

  /**
   * Read & return data from the cookie - as JSON
   *
   * @param {Object}  inst
   */
, readCookie: function (inst) {
    var o = inst.options;
    var c = $.ui.cookie.read( o.stateManagement.cookie.name || o.name || "Layout" );
    // convert cookie string back to a hash and return it
    return c ? $.layout.state.decodeJSON(c) : {};
  }

  /**
   * Get data from the cookie and USE IT to loadState
   *
   * @param {Object}  inst
   */
, loadCookie: function (inst) {
    var c = $.layout.state.readCookie(inst); // READ the cookie
    if (c && !$.isEmptyObject( c )) {
      inst.state.stateData = $.extend(true, {}, c); // SET state.stateData
      inst.loadState(c); // LOAD the retrieved state
    }
    return c;
  }

  /**
   * Update layout options from the cookie, if one exists
   *
   * @param {Object}    inst
   * @param {Object=}   stateData
   * @param {boolean=}  animate
   */
, loadState: function (inst, data, opts) {
    if (!$.isPlainObject( data ) || $.isEmptyObject( data )) return;

    // normalize data & cache in the state object
    data = inst.state.stateData = $.layout.transformData( data ); // panes = default subkey

    // add missing/default state-restore options
    var smo = inst.options.stateManagement;
    opts = $.extend({
      animateLoad:    false //smo.animateLoad
    , includeChildren:  smo.includeChildren
    }, opts );

    if (!inst.state.initialized) {
      /*
       *  layout NOT initialized, so just update its options
       */
      // MUST remove pane.children keys before applying to options
      // use a copy so we don't remove keys from original data
      var o = $.extend(true, {}, data);
      //delete o.center; // center has no state-data - only children
      $.each($.layout.config.allPanes, function (idx, pane) {
        if (o[pane]) delete o[pane].children;      
       });
      // update CURRENT layout-options with saved state data
      $.extend(true, inst.options, o);
    }
    else {
      /*
       *  layout already initialized, so modify layout's configuration
       */
      var noAnimate = !opts.animateLoad
      , o, c, h, state, open
      ;
      $.each($.layout.config.borderPanes, function (idx, pane) {
        o = data[ pane ];
        if (!$.isPlainObject( o )) return; // no key, skip pane

        s = o.size;
        c = o.initClosed;
        h = o.initHidden;
        ar  = o.autoResize
        state = inst.state[pane];
        open  = state.isVisible;

        // reset autoResize
        if (ar)
          state.autoResize = ar;
        // resize BEFORE opening
        if (!open)
          inst._sizePane(pane, s, false, false, false); // false=skipCallback/noAnimation/forceResize
        // open/close as necessary - DO NOT CHANGE THIS ORDER!
        if (h === true)     inst.hide(pane, noAnimate);
        else if (c === true)  inst.close(pane, false, noAnimate);
        else if (c === false) inst.open (pane, false, noAnimate);
        else if (h === false) inst.show (pane, false, noAnimate);
        // resize AFTER any other actions
        if (open)
          inst._sizePane(pane, s, false, false, noAnimate); // animate resize if option passed
      });

      /*
       *  RECURSE INTO CHILD-LAYOUTS
       */
      if (opts.includeChildren) {
        var paneStateChildren, childState;
        $.each(inst.children, function (pane, paneChildren) {
          paneStateChildren = data[pane] ? data[pane].children : 0;
          if (paneStateChildren && paneChildren) {
            $.each(paneChildren, function (stateKey, child) {
              childState = paneStateChildren[stateKey];
              if (child && childState)
                child.loadState( childState );
            });
          }
        });
      }
    }
  }

  /**
   * Get the *current layout state* and return it as a hash
   *
   * @param {Object=}   inst  // Layout instance to get state for
   * @param {object=}   [opts]  // State-Managements override options
   */
, readState: function (inst, opts) {
    // backward compatility
    if ($.type(opts) === 'string') opts = { keys: opts };
    if (!opts) opts = {};
    var sm    = inst.options.stateManagement
    , ic    = opts.includeChildren
    , recurse = ic !== undefined ? ic : sm.includeChildren
    , keys  = opts.stateKeys || sm.stateKeys
    , alt   = { isClosed: 'initClosed', isHidden: 'initHidden' }
    , state = inst.state
    , panes = $.layout.config.allPanes
    , data  = {}
    , pair, pane, key, val
    , ps, pC, child, array, count, branch
    ;
    if ($.isArray(keys)) keys = keys.join(",");
    // convert keys to an array and change delimiters from '__' to '.'
    keys = keys.replace(/__/g, ".").split(',');
    // loop keys and create a data hash
    for (var i=0, n=keys.length; i < n; i++) {
      pair = keys[i].split(".");
      pane = pair[0];
      key  = pair[1];
      if ($.inArray(pane, panes) < 0) continue; // bad pane!
      val = state[ pane ][ key ];
      if (val == undefined) continue;
      if (key=="isClosed" && state[pane]["isSliding"])
        val = true; // if sliding, then *really* isClosed
      ( data[pane] || (data[pane]={}) )[ alt[key] ? alt[key] : key ] = val;
    }

    // recurse into the child-layouts for each pane
    if (recurse) {
      $.each(panes, function (idx, pane) {
        pC = inst.children[pane];
        ps = state.stateData[pane];
        if ($.isPlainObject( pC ) && !$.isEmptyObject( pC )) {
          // ensure a key exists for this 'pane', eg: branch = data.center
          branch = data[pane] || (data[pane] = {});
          if (!branch.children) branch.children = {};
          $.each( pC, function (key, child) {
            // ONLY read state from an initialize layout
            if ( child.state.initialized )
              branch.children[ key ] = $.layout.state.readState( child );
            // if we have PREVIOUS (onLoad) state for this child-layout, KEEP IT!
            else if ( ps && ps.children && ps.children[ key ] ) {
              branch.children[ key ] = $.extend(true, {}, ps.children[ key ] );
            }
          });
        }
      });
    }

    return data;
  }

  /**
   *  Stringify a JSON hash so can save in a cookie or db-field
   */
, encodeJSON: function (json) {
    var local = window.JSON || {};
    return (local.stringify || stringify)(json);

    function stringify (h) {
      var D=[], i=0, k, v, t // k = key, v = value
      , a = $.isArray(h)
      ;
      for (k in h) {
        v = h[k];
        t = typeof v;
        if (t == 'string')    // STRING - add quotes
          v = '"'+ v +'"';
        else if (t == 'object') // SUB-KEY - recurse into it
          v = parse(v);
        D[i++] = (!a ? '"'+ k +'":' : '') + v;
      }
      return (a ? '[' : '{') + D.join(',') + (a ? ']' : '}');
    };
  }

  /**
   *  Convert stringified JSON back to a hash object
   *  @see    $.parseJSON(), adding in jQuery 1.4.1
   */
, decodeJSON: function (str) {
    try { return $.parseJSON ? $.parseJSON(str) : window["eval"]("("+ str +")") || {}; }
    catch (e) { return {}; }
  }


, _create: function (inst) {
    var s = $.layout.state
    , o = inst.options
    , sm  = o.stateManagement
    ;
    //  ADD State-Management plugin methods to inst
     $.extend( inst, {
    //  readCookie - update options from cookie - returns hash of cookie data
      readCookie:   function () { return s.readCookie(inst); }
    //  deleteCookie
    , deleteCookie: function () { s.deleteCookie(inst); }
    //  saveCookie - optionally pass keys-list and cookie-options (hash)
    , saveCookie:   function (keys, cookieOpts) { return s.saveCookie(inst, keys, cookieOpts); }
    //  loadCookie - readCookie and use to loadState() - returns hash of cookie data
    , loadCookie:   function () { return s.loadCookie(inst); }
    //  loadState - pass a hash of state to use to update options
    , loadState:    function (stateData, opts) { s.loadState(inst, stateData, opts); }
    //  readState - returns hash of current layout-state
    , readState:    function (keys) { return s.readState(inst, keys); }
    //  add JSON utility methods too...
    , encodeJSON:   s.encodeJSON
    , decodeJSON:   s.decodeJSON
    });

    // init state.stateData key, even if plugin is initially disabled
    inst.state.stateData = {};

    // autoLoad MUST BE one of: data-array, data-hash, callback-function, or TRUE
    if ( !sm.autoLoad ) return;

    //  When state-data exists in the autoLoad key USE IT,
    //  even if stateManagement.enabled == false
    if ($.isPlainObject( sm.autoLoad )) {
      if (!$.isEmptyObject( sm.autoLoad )) {
        inst.loadState( sm.autoLoad );
      }
    }
    else if ( sm.enabled ) {
      // update the options from cookie or callback
      // if options is a function, call it to get stateData
      if ($.isFunction( sm.autoLoad )) {
        var d = {};
        try {
          d = sm.autoLoad( inst, inst.state, inst.options, inst.options.name || '' ); // try to get data from fn
        } catch (e) {}
        if (d && $.isPlainObject( d ) && !$.isEmptyObject( d ))
          inst.loadState(d);
      }
      else // any other truthy value will trigger loadCookie
        inst.loadCookie();
    }
  }

, _unload: function (inst) {
    var sm = inst.options.stateManagement;
    if (sm.enabled && sm.autoSave) {
      // if options is a function, call it to save the stateData
      if ($.isFunction( sm.autoSave )) {
        try {
          sm.autoSave( inst, inst.state, inst.options, inst.options.name || '' ); // try to get data from fn
        } catch (e) {}
      }
      else // any truthy value will trigger saveCookie
        inst.saveCookie();
    }
  }

};

// add state initialization method to Layout's onCreate array of functions
$.layout.onCreate.push( $.layout.state._create );
$.layout.onUnload.push( $.layout.state._unload );

})( jQuery );



/**
 * @preserve jquery.layout.buttons 1.0
 * $Date: 2011-07-16 08:00:00 (Sat, 16 July 2011) $
 *
 * Copyright (c) 2011 
 *   Kevin Dalman (http://allpro.net)
 *
 * Dual licensed under the GPL (http://www.gnu.org/licenses/gpl.html)
 * and MIT (http://www.opensource.org/licenses/mit-license.php) licenses.
 *
 * @dependancies: UI Layout 1.3.0.rc30.1 or higher
 *
 * @support: http://groups.google.com/group/jquery-ui-layout
 *
 * Docs: [ to come ]
 * Tips: [ to come ]
 */
;(function ($) {

if (!$.layout) return;


// tell Layout that the state plugin is available
$.layout.plugins.buttons = true;

//  Add State-Management options to layout.defaults
$.layout.defaults.autoBindCustomButtons = false;
// Set stateManagement as a layout-option, NOT a pane-option
$.layout.optionsMap.layout.push("autoBindCustomButtons");

/*
 *  Button methods
 */
$.layout.buttons = {
  // set data used by multiple methods below
  config: {
    borderPanes:  "north,south,west,east"
  }

  /**
  * Searches for .ui-layout-button-xxx elements and auto-binds them as layout-buttons
  *
  * @see  _create()
  */
, init: function (inst) {
    var pre   = "ui-layout-button-"
    , layout  = inst.options.name || ""
    , name;
    $.each("toggle,open,close,pin,toggle-slide,open-slide".split(","), function (i, action) {
      $.each($.layout.buttons.config.borderPanes.split(","), function (ii, pane) {
        $("."+pre+action+"-"+pane).each(function(){
          // if button was previously 'bound', data.layoutName was set, but is blank if layout has no 'name'
          name = $(this).data("layoutName") || $(this).attr("layoutName");
          if (name == undefined || name === layout)
            inst.bindButton(this, action, pane);
        });
      });
    });
  }

  /**
  * Helper function to validate params received by addButton utilities
  *
  * Two classes are added to the element, based on the buttonClass...
  * The type of button is appended to create the 2nd className:
  *  - ui-layout-button-pin
  *  - ui-layout-pane-button-toggle
  *  - ui-layout-pane-button-open
  *  - ui-layout-pane-button-close
  *
  * @param  {(string|!Object)}  selector  jQuery selector (or element) for button, eg: ".ui-layout-north .toggle-button"
  * @param  {string}        pane    Name of the pane the button is for: 'north', 'south', etc.
  * @return {Array.<Object>}    If both params valid, the element matching 'selector' in a jQuery wrapper - otherwise returns null
  */
, get: function (inst, selector, pane, action) {
    var $E  = $(selector)
    , o = inst.options
    //, err = o.showErrorMessages
    ;
    if ($E.length && $.layout.buttons.config.borderPanes.indexOf(pane) >= 0) {
      var btn = o[pane].buttonClass +"-"+ action;
      $E  .addClass( btn +" "+ btn +"-"+ pane )
        .data("layoutName", o.name); // add layout identifier - even if blank!
    }
    return $E;
  }


  /**
  * NEW syntax for binding layout-buttons - will eventually replace addToggle, addOpen, etc.
  *
  * @param {(string|!Object)} sel   jQuery selector (or element) for button, eg: ".ui-layout-north .toggle-button"
  * @param {string}     action
  * @param {string}     pane
  */
, bind: function (inst, sel, action, pane) {
    var _ = $.layout.buttons;
    switch (action.toLowerCase()) {
      case "toggle":      _.addToggle (inst, sel, pane); break; 
      case "open":      _.addOpen (inst, sel, pane); break;
      case "close":     _.addClose  (inst, sel, pane); break;
      case "pin":       _.addPin  (inst, sel, pane); break;
      case "toggle-slide":  _.addToggle (inst, sel, pane, true); break; 
      case "open-slide":    _.addOpen (inst, sel, pane, true); break;
    }
    return inst;
  }

  /**
  * Add a custom Toggler button for a pane
  *
  * @param {(string|!Object)} selector  jQuery selector (or element) for button, eg: ".ui-layout-north .toggle-button"
  * @param {string}       pane    Name of the pane the button is for: 'north', 'south', etc.
  * @param {boolean=}     slide     true = slide-open, false = pin-open
  */
, addToggle: function (inst, selector, pane, slide) {
    $.layout.buttons.get(inst, selector, pane, "toggle")
      .click(function(evt){
        inst.toggle(pane, !!slide);
        evt.stopPropagation();
      });
    return inst;
  }

  /**
  * Add a custom Open button for a pane
  *
  * @param {(string|!Object)} selector  jQuery selector (or element) for button, eg: ".ui-layout-north .toggle-button"
  * @param {string}     pane    Name of the pane the button is for: 'north', 'south', etc.
  * @param {boolean=}     slide     true = slide-open, false = pin-open
  */
, addOpen: function (inst, selector, pane, slide) {
    $.layout.buttons.get(inst, selector, pane, "open")
      .attr("title", inst.options[pane].tips.Open)
      .click(function (evt) {
        inst.open(pane, !!slide);
        evt.stopPropagation();
      });
    return inst;
  }

  /**
  * Add a custom Close button for a pane
  *
  * @param {(string|!Object)} selector  jQuery selector (or element) for button, eg: ".ui-layout-north .toggle-button"
  * @param {string}       pane    Name of the pane the button is for: 'north', 'south', etc.
  */
, addClose: function (inst, selector, pane) {
    $.layout.buttons.get(inst, selector, pane, "close")
      .attr("title", inst.options[pane].tips.Close)
      .click(function (evt) {
        inst.close(pane);
        evt.stopPropagation();
      });
    return inst;
  }

  /**
  * Add a custom Pin button for a pane
  *
  * Four classes are added to the element, based on the paneClass for the associated pane...
  * Assuming the default paneClass and the pin is 'up', these classes are added for a west-pane pin:
  *  - ui-layout-pane-pin
  *  - ui-layout-pane-west-pin
  *  - ui-layout-pane-pin-up
  *  - ui-layout-pane-west-pin-up
  *
  * @param {(string|!Object)} selector  jQuery selector (or element) for button, eg: ".ui-layout-north .toggle-button"
  * @param {string}       pane    Name of the pane the pin is for: 'north', 'south', etc.
  */
, addPin: function (inst, selector, pane) {
    var $E = $.layout.buttons.get(inst, selector, pane, "pin");
    if ($E.length) {
      var s = inst.state[pane];
      $E.click(function (evt) {
        $.layout.buttons.setPinState(inst, $(this), pane, (s.isSliding || s.isClosed));
        if (s.isSliding || s.isClosed) inst.open( pane ); // change from sliding to open
        else inst.close( pane ); // slide-closed
        evt.stopPropagation();
      });
      // add up/down pin attributes and classes
      $.layout.buttons.setPinState(inst, $E, pane, (!s.isClosed && !s.isSliding));
      // add this pin to the pane data so we can 'sync it' automatically
      // PANE.pins key is an array so we can store multiple pins for each pane
      s.pins.push( selector ); // just save the selector string
    }
    return inst;
  }

  /**
  * Change the class of the pin button to make it look 'up' or 'down'
  *
  * @see  addPin(), syncPins()
  * @param {Array.<Object>} $Pin  The pin-span element in a jQuery wrapper
  * @param {string} pane  These are the params returned to callbacks by layout()
  * @param {boolean}  doPin true = set the pin 'down', false = set it 'up'
  */
, setPinState: function (inst, $Pin, pane, doPin) {
    var updown = $Pin.attr("pin");
    if (updown && doPin === (updown=="down")) return; // already in correct state
    var
      po    = inst.options[pane]
    , lang  = po.tips
    , pin   = po.buttonClass +"-pin"
    , side  = pin +"-"+ pane
    , UP    = pin +"-up "+  side +"-up"
    , DN    = pin +"-down "+side +"-down"
    ;
    $Pin
      .attr("pin", doPin ? "down" : "up") // logic
      .attr("title", doPin ? lang.Unpin : lang.Pin)
      .removeClass( doPin ? UP : DN ) 
      .addClass( doPin ? DN : UP ) 
    ;
  }

  /**
  * INTERNAL function to sync 'pin buttons' when pane is opened or closed
  * Unpinned means the pane is 'sliding' - ie, over-top of the adjacent panes
  *
  * @see  open(), close()
  * @param {string} pane   These are the params returned to callbacks by layout()
  * @param {boolean}  doPin  True means set the pin 'down', False means 'up'
  */
, syncPinBtns: function (inst, pane, doPin) {
    // REAL METHOD IS _INSIDE_ LAYOUT - THIS IS HERE JUST FOR REFERENCE
    $.each(state[pane].pins, function (i, selector) {
      $.layout.buttons.setPinState(inst, $(selector), pane, doPin);
    });
  }


, _load: function (inst) {
    //  ADD Button methods to Layout Instance
    $.extend( inst, {
      bindButton:   function (selector, action, pane) { return $.layout.buttons.bind(inst, selector, action, pane); }
    //  DEPRECATED METHODS...
    , addToggleBtn: function (selector, pane, slide) { return $.layout.buttons.addToggle(inst, selector, pane, slide); }
    , addOpenBtn:   function (selector, pane, slide) { return $.layout.buttons.addOpen(inst, selector, pane, slide); }
    , addCloseBtn:  function (selector, pane) { return $.layout.buttons.addClose(inst, selector, pane); }
    , addPinBtn:    function (selector, pane) { return $.layout.buttons.addPin(inst, selector, pane); }
    });

    // init state array to hold pin-buttons
    for (var i=0; i<4; i++) {
      var pane = $.layout.buttons.config.borderPanes[i];
      inst.state[pane].pins = [];
    }

    // auto-init buttons onLoad if option is enabled
    if ( inst.options.autoBindCustomButtons )
      $.layout.buttons.init(inst);
  }

, _unload: function (inst) {
    // TODO: unbind all buttons???
  }

};

// add initialization method to Layout's onLoad array of functions
$.layout.onLoad.push(  $.layout.buttons._load );
//$.layout.onUnload.push( $.layout.buttons._unload );

})( jQuery );




/**
 * jquery.layout.browserZoom 1.0
 * $Date: 2011-12-29 08:00:00 (Thu, 29 Dec 2011) $
 *
 * Copyright (c) 2012 
 *   Kevin Dalman (http://allpro.net)
 *
 * Dual licensed under the GPL (http://www.gnu.org/licenses/gpl.html)
 * and MIT (http://www.opensource.org/licenses/mit-license.php) licenses.
 *
 * @requires: UI Layout 1.3.0.rc30.1 or higher
 *
 * @see: http://groups.google.com/group/jquery-ui-layout
 *
 * TODO: Extend logic to handle other problematic zooming in browsers
 * TODO: Add hotkey/mousewheel bindings to _instantly_ respond to these zoom event
 */
(function ($) {

// tell Layout that the plugin is available
$.layout.plugins.browserZoom = true;

$.layout.defaults.browserZoomCheckInterval = 1000;
$.layout.optionsMap.layout.push("browserZoomCheckInterval");

/*
 *  browserZoom methods
 */
$.layout.browserZoom = {

  _init: function (inst) {
    // abort if browser does not need this check
    if ($.layout.browserZoom.ratio() !== false)
      $.layout.browserZoom._setTimer(inst);
  }

, _setTimer: function (inst) {
    // abort if layout destroyed or browser does not need this check
    if (inst.destroyed) return;
    var o = inst.options
    , s = inst.state
    //  don't need check if inst has parentLayout, but check occassionally in case parent destroyed!
    //  MINIMUM 100ms interval, for performance
    , ms  = inst.hasParentLayout ?  5000 : Math.max( o.browserZoomCheckInterval, 100 )
    ;
    // set the timer
    setTimeout(function(){
      if (inst.destroyed || !o.resizeWithWindow) return;
      var d = $.layout.browserZoom.ratio();
      if (d !== s.browserZoom) {
        s.browserZoom = d;
        inst.resizeAll();
      }
      // set a NEW timeout
      $.layout.browserZoom._setTimer(inst);
    }
    , ms );
  }

, ratio: function () {
    var w = window
    , s = screen
    , d = document
    , dE  = d.documentElement || d.body
    , b = $.layout.browser
    , v = b.version
    , r, sW, cW
    ;
    // we can ignore all browsers that fire window.resize event onZoom
    if (!b.msie || v > 8)
      return false; // don't need to track zoom
    if (s.deviceXDPI && s.systemXDPI) // syntax compiler hack
      return calc(s.deviceXDPI, s.systemXDPI);
    // everything below is just for future reference!
    if (b.webkit && (r = d.body.getBoundingClientRect))
      return calc((r.left - r.right), d.body.offsetWidth);
    if (b.webkit && (sW = w.outerWidth))
      return calc(sW, w.innerWidth);
    if ((sW = s.width) && (cW = dE.clientWidth))
      return calc(sW, cW);
    return false; // no match, so cannot - or don't need to - track zoom

    function calc (x,y) { return (parseInt(x,10) / parseInt(y,10) * 100).toFixed(); }
  }

};
// add initialization method to Layout's onLoad array of functions
$.layout.onReady.push( $.layout.browserZoom._init );


})( jQuery );




/**
 *  UI Layout Plugin: Slide-Offscreen Animation
 *
 *  Prevent panes from being 'hidden' so that an iframes/objects 
 *  does not reload/refresh when pane 'opens' again.
 *  This plug-in adds a new animation called "slideOffscreen".
 *  It is identical to the normal "slide" effect, but avoids hiding the element
 *
 *  Requires Layout 1.3.0.RC30.1 or later for Close offscreen
 *  Requires Layout 1.3.0.RC30.5 or later for Hide, initClosed & initHidden offscreen
 *
 *  Version:  1.1 - 2012-11-18
 *  Author:   Kevin Dalman (kevin@jquery-dev.com)
 *  @preserve jquery.layout.slideOffscreen-1.1.js
 */
;(function ($) {

// Add a new "slideOffscreen" effect
if ($.effects) {

  // add an option so initClosed and initHidden will work
  $.layout.defaults.panes.useOffscreenClose = false; // user must enable when needed
  /* set the new animation as the default for all panes
  $.layout.defaults.panes.fxName = "slideOffscreen";
  */

  if ($.layout.plugins)
    $.layout.plugins.effects.slideOffscreen = true;

  // dupe 'slide' effect defaults as new effect defaults
  $.layout.effects.slideOffscreen = $.extend(true, {}, $.layout.effects.slide);

  // add new effect to jQuery UI
  $.effects.slideOffscreen = function(o) {
    return this.queue(function(){

      var fx    = $.effects
      , opt   = o.options
      , $el   = $(this)
      , pane  = $el.data('layoutEdge')
      , state = $el.data('parentLayout').state
      , dist  = state[pane].size
      , s   = this.style
      , props = ['top','bottom','left','right']
        // Set options
      , mode  = fx.setMode($el, opt.mode || 'show') // Set Mode
      , show  = (mode == 'show')
      , dir   = opt.direction || 'left' // Default Direction
      , ref   = (dir == 'up' || dir == 'down') ? 'top' : 'left'
      , pos   = (dir == 'up' || dir == 'left')
      , offscrn = $.layout.config.offscreenCSS || {}
      , keyLR = $.layout.config.offscreenReset
      , keyTB = 'offscreenResetTop' // only used internally
      , animation = {}
      ;
      // Animation settings
      animation[ref]  = (show ? (pos ? '+=' : '-=') : (pos ? '-=' : '+=')) + dist;

      if (show) { // show() animation, so save top/bottom but retain left/right set when 'hidden'
        $el.data(keyTB, { top: s.top, bottom: s.bottom });

        // set the top or left offset in preparation for animation
        // Note: ALL animations work by shifting the top or left edges
        if (pos) { // top (north) or left (west)
          $el.css(ref, isNaN(dist) ? "-" + dist : -dist); // Shift outside the left/top edge
        }
        else { // bottom (south) or right (east) - shift all the way across container
          if (dir === 'right')
            $el.css({ left: state.container.layoutWidth, right: 'auto' });
          else // dir === bottom
            $el.css({ top: state.container.layoutHeight, bottom: 'auto' });
        }
        // restore the left/right setting if is a top/bottom animation
        if (ref === 'top')
          $el.css( $el.data( keyLR ) || {} );
      }
      else { // hide() animation, so save ALL CSS
        $el.data(keyTB, { top: s.top, bottom: s.bottom });
        $el.data(keyLR, { left: s.left, right: s.right });
      }

      // Animate
      $el.show().animate(animation, { queue: false, duration: o.duration, easing: opt.easing, complete: function(){
        // Restore top/bottom
        if ($el.data( keyTB ))
          $el.css($el.data( keyTB )).removeData( keyTB );
        if (show) // Restore left/right too
          $el.css($el.data( keyLR ) || {}).removeData( keyLR );
        else // Move the pane off-screen (left: -99999, right: 'auto')
          $el.css( offscrn );

        if (o.callback) o.callback.apply(this, arguments); // Callback
        $el.dequeue();
      }});

    });
  };

}

})( jQuery );